function GFslideShow(photoFeed,container,options){this.feedUrl=null;this.directEntries=null;if(typeof photoFeed=="string"){this.feedUrl=photoFeed;}else{if(photoFeed&&photoFeed.length&&photoFeed.length>1){this.directEntries=photoFeed;}else{throw"invalid argument: photoFeed";}}if(typeof container=="string"){container=document.getElementById(container);}this.container=container;this.parseOptions(options);this.setup();}GFslideShow.THUMBNAILS_SMALL="small";GFslideShow.THUMBNAILS_MEDIUM="medium";GFslideShow.THUMBNAILS_LARGE="large";GFslideShow.MRSS_THUMBNAIL_TAG="thumbnail";GFslideShow.MRSS_THUMBNAIL_NS="http://search.yahoo.com/mrss/";GFslideShow.ITMS_THUMBNAIL_TAG="coverArt";GFslideShow.ITMS_THUMBNAIL_NS="http://phobos.apple.com/rss/1.0/modules/itms/";GFslideShow.DEFAULT_THUMBNAIL_TAG=GFslideShow.MRSS_THUMBNAIL_TAG;GFslideShow.DEFAULT_THUMBNAIL_NS=GFslideShow.MRSS_THUMBNAIL_NS;GFslideShow.DEFAULT_DISPLAY_TIME=3000;GFslideShow.DEFAULT_TRANSISTION_TIME=1000;GFslideShow.DEFAULT_TRANSISTION_STEP=40;GFslideShow.DEFAULT_PAUSE_PNG=google.loader.ServiceBase+"/solutions/slideshow/pause.png";GFslideShow.DEFAULT_PLAY_PNG=google.loader.ServiceBase+"/solutions/slideshow/play.png";GFslideShow.FC_PAUSE_PNG={small:google.loader.ServiceBase+"/solutions/slideshow/btn_pause_small.png",big:google.loader.ServiceBase+"/solutions/slideshow/btn_pause.png"};GFslideShow.FC_PLAY_PNG={small:google.loader.ServiceBase+"/solutions/slideshow/btn_play_small.png",big:google.loader.ServiceBase+"/solutions/slideshow/btn_play.png"};GFslideShow.FC_PREV_PNG={small:google.loader.ServiceBase+"/solutions/slideshow/btn_prev_small.png",big:google.loader.ServiceBase+"/solutions/slideshow/btn_prev.png"};GFslideShow.FC_NEXT_PNG={small:google.loader.ServiceBase+"/solutions/slideshow/btn_next_small.png",big:google.loader.ServiceBase+"/solutions/slideshow/btn_next.png"};GFslideShow.DEFAULT_FC_FADEOUT_TIME=5000;GFslideShow.DEFAULT_FC_OPACITY=0.65;GFslideShow.prototype.parseOptions=function(options){var maxEntries;if(google!=undefined&&google.feeds!=undefined){maxEntries=google.feeds.Feed.MAX_ENTRIES;}else{maxEntries=20;}this.options={numResults:maxEntries,scaleImages:false,thumbnailTag:GFslideShow.DEFAULT_THUMBNAIL_TAG,thumbnailNamespace:GFslideShow.DEFAULT_THUMBNAIL_NS,thumbnailSize:GFslideShow.THUMBNAILS_LARGE,linkTarget:null,displayTime:GFslideShow.DEFAULT_DISPLAY_TIME,transitionTime:GFslideShow.DEFAULT_TRANSISTION_TIME,transitionStep:GFslideShow.DEFAULT_TRANSISTION_STEP,pauseOnHover:true,pauseImage:GFslideShow.DEFAULT_PAUSE_PNG,pauseStateCallback:null,scalePauseImage:true,autoCleanup:true,thumbnailUrlResolver:null,transitionCallback:null,transitionAnimationCallback:null,feedLoadCallback:null,feedProcessedCallback:null,imageClickCallback:null,centerBias:{topBias:0,leftBias:0},pauseCenterBias:{topBias:0,leftBias:0},fullControlPanel:false,fullControlPanelCursor:false,fullControlPanelFadeOutTime:GFslideShow.DEFAULT_FC_FADEOUT_TIME,fullControlPanelPlayCallback:null,fullControlPanelSmallIcons:false,maintainAspectRatio:true};if(options){for(o in this.options){if(typeof options[o]!="undefined"){this.options[o]=options[o];}}}if(this.options.displayTime<100){this.options.displayTime=100;}var ts=(this.options.transitionTime/this.options.transitionStep);this.delta=Math.min(1,(1/ts));this.started=false;};GFslideShow.prototype.setup=function(){if(this.container==null){return;}if(window.ActiveXObject){this.ie=this[window.XMLHttpRequest?"ie7":"ie6"]=true;}else{if(window.opera){this.opera=true;}else{if(document.childNodes&&!document.all&&!navigator.taintEnabled){this.safari=true;if(navigator.userAgent.indexOf("iPhone")>0){this.iphone=true;}}else{if(document.getBoxObjectFor!=null){this.gecko=true;}}}}if(this.feedUrl){this.feed=new google.feeds.Feed(this.feedUrl);this.feed.setResultFormat(google.feeds.Feed.MIXED_FORMAT);this.feed.setNumEntries(this.options.numResults);this.feed.load(this.bind(this.feedLoaded));}else{if(this.directEntries){this.feedLoaded(this.directEntries);}}};GFslideShow.prototype.addEntries=function(newEntries){this.processEntries(newEntries);if(!this.thumb_timer){this.processThumbs();}};GFslideShow.prototype.bind=function(method){var self=this;var opt_args=[].slice.call(arguments,1);return function(){var args=opt_args.concat([].slice.call(arguments));return method.apply(self,args);};};GFslideShow.prototype.mouseOver=function(e){var event=e||window.event;var relatedTarget=event.relatedTarget||event.fromElement;while(relatedTarget!=null){if(relatedTarget==this.container){return;}relatedTarget=relatedTarget.parentNode;}if(this.options.fullControlPanel){if(this.options.pauseOnHover&&!this.display_paused){this.pauseOrPlayFullControl();}this.fadeInFullControl();}else{this.display_paused=true;if(this.pauseImage){this.pauseImage.style.visibility="visible";}}if(this.options.pauseStateCallback){this.options.pauseStateCallback(this.display_paused);}};GFslideShow.prototype.mouseOut=function(e){var event=e||window.event;var relatedTarget=event.relatedTarget||event.toElement;while(relatedTarget!=null){if(relatedTarget==this.container){return;}relatedTarget=relatedTarget.parentNode;}if(this.options.fullControlPanel){this.fadeOutFullControl();this.container.onmousemove=null;if(this.options.pauseOnHover&&this.display_paused){this.pauseOrPlayFullControl();}}else{this.display_paused=false;if(this.pauseImage){this.pauseImage.style.visibility="hidden";}}if(this.options.pauseStateCallback){this.options.pauseStateCallback(this.display_paused);}if(this.display_timer==null&&this.transition_timer==null){this.displayNextPhoto();}};GFslideShow.prototype.operaClickAndCallout=function(){var entry=this.entries[this.photo_index];var tmpLink=this.createLink(entry.link);tmpLink.click();};GFslideShow.prototype.pause=function(opt_suppressPauseImage){var pi=this.pauseImage;if(opt_suppressPauseImage){this.pauseImage=null;}this.pauseAndCallout();this.pauseImage=pi;};GFslideShow.prototype.resume=function(){this.resumeSlideShow();};GFslideShow.prototype.pauseAndCallout=function(){this.display_paused=true;if(this.pauseImage){this.pauseImage.style.visibility="visible";}this.container.onmouseout=null;if(this.options.imageClickCallback){this.options.imageClickCallback(this.entries[this.photo_index]);}};GFslideShow.prototype.resumeSlideShow=function(){if(this.options.pauseOnHover||this.options.fullControlPanel){this.container.onmouseover=this.bind(this.mouseOver);this.container.onmouseout=this.bind(this.mouseOut);}this.display_paused=false;if(this.pauseImage){this.pauseImage.style.visibility="hidden";}if(this.display_timer==null&&this.transition_timer==null){this.displayNextPhoto();}};GFslideShow.prototype.clearNode=function(node){if(node==null){return;}var child;while(child=node.firstChild){node.removeChild(child);}};GFslideShow.prototype.createSubContainer=function(){var div=document.createElement("div");div.style.width="100%";div.style.height="100%";div.style.position="relative";div.style.overflow="hidden";this.clearNode(this.container);this.container.appendChild(div);this.container=div;};GFslideShow.prototype.grabThumb=function(thumbNodes){var ti=0;if(thumbNodes.length>1){if(this.options.thumbnailSize==GFslideShow.THUMBNAILS_LARGE){ti=thumbNodes.length-1;}else{if(this.options.thumbnailSize==GFslideShow.THUMBNAILS_MEDIUM){ti=Math.floor(thumbNodes.length/2);}}}var node=thumbNodes[ti];var thumb=null;var thumb=node.getAttribute("url");if(!thumb){thumb=node.firstChild.nodeValue;}return thumb;};GFslideShow.prototype.processThumbs=function(opt_chunk,opt_timeout){this.thumb_timer=null;var start=this.thumbs_index;var num=this.entries.length;var chunk=opt_chunk||4;if(num>(start+chunk)){num=(start+chunk);var cb=this.bind(this.processThumbs);var to=opt_timeout||Math.round(this.options.displayTime/4);this.thumb_timer=window.setTimeout(cb,to);}for(var i=start;i<num;i++){var thumbUrl=this.entries[i].thumbUrl;var image=this.createImage(thumbUrl);this.images.push(image);if(this.options.linkTarget){if(!this.opera){var link=this.createLink(this.entries[i].link);link.appendChild(image);this.container.appendChild(link);}else{image.onclick=this.bind(this.operaClickAndCallout);image.style.cursor="pointer";this.container.appendChild(image);}}else{this.container.appendChild(image);}if(image.complete){this.imageLoaded(image);}else{image.onerror=this.bind(this.imageError,image);image.onload=this.bind(this.imageLoaded,image);}this.thumbs_index++;}};GFslideShow.prototype.processEntries=function(entries){for(var i=0;i<entries.length;i++){var thumbUrl=null;if(this.options.thumbnailUrlResolver){thumbUrl=this.options.thumbnailUrlResolver(entries[i]);}else{var thumbNodes=google.feeds.getElementsByTagNameNS(entries[i].xmlNode,this.options.thumbnailNamespace,this.options.thumbnailTag);if(thumbNodes&&thumbNodes.length>0){thumbUrl=this.grabThumb(thumbNodes);}}if(thumbUrl){entries[i].thumbUrl=thumbUrl;this.entries.push(entries[i]);}}};GFslideShow.prototype.feedLoaded=function(result){if(this.options.feedLoadCallback){this.options.feedLoadCallback(result);}if((this.feedUrl&&result.error)||(this.directEntries&&this.directEntries.length==0)){if(!this.options.feedLoadCallback){this.container.innerHTML='<center style="color: gray">feed could not be loaded.</center>';}return;}this.createSubContainer();if(this.container.offsetWidth){this.width=this.container.offsetWidth;this.height=this.container.offsetHeight;}this.createPauseImage();this.images=[];this.entries=[];this.thumbs_index=0;var entries;if(this.feedUrl){entries=result.feed.entries;}else{entries=this.directEntries;}this.processEntries(entries);if(this.options.feedProcessedCallback){this.options.feedProcessedCallback(result);}if(this.options.fullControlPanel&&this.entries.length>0){this.createFullControlPanel();}if((this.options.pauseOnHover||this.options.fullControlPanel)&&this.entries.length>0){this.container.onmouseover=this.bind(this.mouseOver);this.container.onmouseout=this.bind(this.mouseOut);}if(this.options.imageClickCallback){this.container.onclick=this.bind(this.pauseAndCallout);}this.processThumbs(1,100+(Math.random()*100));};GFslideShow.prototype.imageLoaded=function(image){image.__gfloaded=true;this.adjustImage(image);if(!this.started){for(var i=0;i<this.images.length;i++){if(image==this.images[i]){this.beginSlideShow(i);}break;}}};GFslideShow.prototype.imageError=function(image){image.__gferror=true;};GFslideShow.prototype.adjustImage=function(image){if(this.options.scaleImages){if(this.options.maintainAspectRatio){this.scaleImage(image);}else{image.style.height=this.height+"px";image.style.width=this.width+"px";}}this.centerImage(image);};GFslideShow.prototype.scaleImage=function(image,opt_width,opt_height){var width=opt_width||this.width;var height=opt_height||this.height;var imgW=image.offsetWidth;var imgH=image.offsetHeight;if(imgW<=0||imgH<=0){return;}var scaleH=height/imgH;var scaleW=width/imgW;if(scaleH<scaleW){image.style.height=height+"px";image.style.width=Math.round(imgW*scaleH)+"px";}else{image.style.width=width+"px";image.style.height=Math.round(imgH*scaleW)+"px";}};GFslideShow.prototype.centerImage=function(image){var oh=this.height-image.offsetHeight;var ow=this.width-image.offsetWidth;image.style.top="0px";image.style.left="0px";if(oh>0){var ah=Math.round(oh/2);image.style.top=image.offsetTop+ah+this.options.centerBias.topBias+"px";}if(ow>0){var aw=Math.round(ow/2);image.style.left=image.offsetLeft+aw+this.options.centerBias.leftBias+"px";}};GFslideShow.prototype.createLink=function(href){var link=document.createElement("a");link.setAttribute("href",href);if(this.options.linkTarget){link.setAttribute("target",this.options.linkTarget);}return link;};GFslideShow.prototype.createImage=function(src){var image=document.createElement("img");image.style.position="absolute";image.setAttribute("src",src);this.setOpacity(image,0);return image;};GFslideShow.prototype.adjustPauseImage=function(image){if(this.options.scalePauseImage){var height=Math.round(this.height*0.33);var width=Math.round(this.width*0.33);this.scaleImage(image,width,height);}this.placePauseImage(image);};GFslideShow.prototype.placePauseImage=function(image){var oh=this.height-image.offsetHeight;var ow=this.width-image.offsetWidth;image.style.top="0px";image.style.left="0px";if(oh>0){var off=Math.round(this.height*0.1);if(off<15){off=10;}var ah=this.height-(image.offsetHeight+off);if(ah<0){ah=0;}image.style.top=image.offsetTop+ah+this.options.pauseCenterBias.topBias+"px";}if(ow>0){var aw=Math.round(ow/2);image.style.left=image.offsetLeft+aw+this.options.pauseCenterBias.leftBias+"px";}};GFslideShow.prototype.createAlphaPauseImage=function(image){this.adjustPauseImage(image);var imgW=image.offsetWidth;var imgH=image.offsetHeight;var imgT=image.style.top;var imgL=image.style.left;var element=null;if(this.ie){var src=this.options.pauseImage;element=document.createElement("div");element.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+src+"', sizingMethod='scale')";element.style.position="absolute";element.style.width=imgW+"px";element.style.height=imgH+"px";element.style.left=imgL;element.style.top=imgT;}else{element=image;element.style.opacity="";}element.style.visibility="hidden";element.style.zIndex=222;if(element!=image){this.container.appendChild(element);this.container.removeChild(image);}this.pauseImage=element;};GFslideShow.prototype.pauseImageLoaded=function(image){this.createAlphaPauseImage(image);};GFslideShow.prototype.createPauseImage=function(src){if(!this.options.pauseOnHover){return;}var pauseOff=this.createImage(this.options.pauseImage);this.container.appendChild(pauseOff);if(pauseOff.complete){this.createAlphaPauseImage(pauseOff);}else{pauseOff.onload=this.bind(this.pauseImageLoaded,pauseOff);}};GFslideShow.prototype.createFullControlPanel=function(){var h=(this.options.fullControlPanelSmallIcons?25:45);if(this.options.fullControlPanelCursor){h+=10;}var padTop=(this.options.fullControlPanelSmallIcons?5:10);var padBottom=5;var div=document.createElement("div");div.style.backgroundColor="#000000";div.style.height=h+"px";div.style.top=(this.height-(h+padBottom+padTop))+"px";div.style.width="100%";div.style.zIndex="222";div.style.position="relative";div.style.textAlign="center";div.style.direction="ltr";div.style.paddingTop=padTop+"px";div.style.paddingBottom=padBottom+"px";var iconSize=this.options.fullControlPanelSmallIcons?"small":"big";var handCursor=this.ie?"hand":"pointer";var pause=document.createElement("img");pause.src=GFslideShow.FC_PAUSE_PNG[iconSize];pause.style.cursor=handCursor;var next=document.createElement("img");next.src=GFslideShow.FC_NEXT_PNG[iconSize];next.style.cursor=handCursor;var prev=document.createElement("img");prev.src=GFslideShow.FC_PREV_PNG[iconSize];prev.style.cursor=handCursor;pause.style.marginLeft="5px";pause.style.marginRight="5px";div.appendChild(prev);div.appendChild(pause);div.appendChild(next);var cursor=null;if(this.options.fullControlPanelCursor){cursor=document.createElement("div");cursor.style.height="1.3em";cursor.style.fontSize="11px";cursor.style.color="#bbbbbb";div.appendChild(cursor);}this.fc={};this.fc.container=div;this.fc.pause=pause;this.fc.next=next;this.fc.prev=prev;this.fc.cursor=cursor;next.onclick=this.bind(this.goForward);prev.onclick=this.bind(this.goBackward);pause.onclick=this.bind(this.pauseOrPlayClick);this.fc.container.style.visibility="hidden";this.container.appendChild(div);};GFslideShow.prototype.clearTransitionTimer=function(){if(this.transition_timer){clearInterval(this.transition_timer);this.transition_timer=null;}};GFslideShow.prototype.setTransitionTimer=function(){this.clearTransitionTimer();this.lastTick=GFslideShow.timeNow();var cb=this.bind(this.transitionAnimation);this.transition_timer=window.setInterval(cb,this.options.transitionStep);};GFslideShow.prototype.clearDisplayTimer=function(){if(this.display_timer){clearTimeout(this.display_timer);this.display_timer=null;}};GFslideShow.prototype.setDisplayTimer=function(){if(this.display_timer){return;}var cb=this.bind(this.displayNextPhoto);this.display_timer=window.setTimeout(cb,this.options.displayTime);};GFslideShow.prototype.clearThumbTimer=function(){if(this.thumb_timer){clearTimeout(this.thumb_timer);this.thumb_timer=null;}};GFslideShow.prototype.beginSlideShow=function(index){this.photo_index=index;this.next=this.images[this.photo_index];this.snapToNextPhoto();this.started=true;};GFslideShow.timeNow=function(){var d=new Date();return d.getTime();};GFslideShow.prototype.goForward=function(){this.finishTransition();this.setNextPhoto();this.snapToNextPhoto();this.clearFullControlTimeoutTimer();};GFslideShow.prototype.goBackward=function(){this.finishTransition();this.setPreviousPhoto();this.snapToNextPhoto();this.clearFullControlTimeoutTimer();};GFslideShow.prototype.gotoIndex=function(index){if(index==this.photo_index){return;}this.clearTransitionTimer();this.setPhotoIndex(index);this.snapToNextPhoto();this.clearFullControlTimeoutTimer();};GFslideShow.prototype.pauseOrPlayClick=function(){if(this.options.fullControlPanelPlayCallback&&this.display_paused){this.container.onmouseover=null;this.container.onmouseout=null;this.options.fullControlPanelPlayCallback(this.entries[this.photo_index]);this.fadeOutFullControl();}else{this.pauseOrPlayFullControl();}};GFslideShow.prototype.pauseOrPlayFullControl=function(){var iconSize=this.options.fullControlPanelSmallIcons?"small":"big";if(this.display_paused){this.display_paused=false;this.fc.pause.src=GFslideShow.FC_PAUSE_PNG[iconSize];if(this.display_timer==null&&this.transition_timer==null){this.displayNextPhoto();}}else{this.display_paused=true;this.fc.pause.src=GFslideShow.FC_PLAY_PNG[iconSize];}};GFslideShow.prototype.fullControlMotion=function(){var op=this.fc.container.opacity;if(op<GFslideShow.DEFAULT_FC_OPACITY){this.container.onmousemove=null;this.clearFullControlTimeoutTimer();this.fadeInFullControl();}else{this.setFullControlTimeoutTimer();}};GFslideShow.prototype.clearFullControlTimeoutTimer=function(){if(!this.fc){return;}if(this.fc.timeout){clearTimeout(this.fc.timeout);this.fc.timeout=null;}};GFslideShow.prototype.setFullControlTimeoutTimer=function(){if(this.fc.timeout){clearTimeout(this.fc.timeout);this.fc.timeout=null;}if(this.options.fullControlPanelFadeOutTime>0){var cb=this.bind(this.fadeOutFullControl);this.fc.timeout=setTimeout(cb,this.options.fullControlPanelFadeOutTime);}};GFslideShow.prototype.setFullControlTimeout=function(){this.container.onmousemove=this.bind(this.fullControlMotion);this.setFullControlTimeoutTimer();};GFslideShow.prototype.fadeInFullControl=function(){this.setOpacity(this.fc.container,0);var cb=this.bind(this.fadeInFullControlAnimation);this.setFullControlFadeTimer(cb);};GFslideShow.prototype.fadeInFullControlAnimation=function(){var op=this.fc.container.opacity;op+=0.075;op=Math.min(GFslideShow.DEFAULT_FC_OPACITY,op);this.setOpacity(this.fc.container,op);if(op>=GFslideShow.DEFAULT_FC_OPACITY){this.setFullControlFadeTimer();this.setFullControlTimeout();}};GFslideShow.prototype.fadeOutFullControl=function(){var cb=this.bind(this.fadeOutFullControlAnimation);this.setFullControlFadeTimer(cb);};GFslideShow.prototype.fadeOutFullControlAnimation=function(){var op=this.fc.container.opacity;op-=0.075;this.setOpacity(this.fc.container,op);if(op<=0){this.setFullControlFadeTimer();}};GFslideShow.prototype.setFullControlFadeTimer=function(opt_callback){if(this.fc.fade_timer){clearInterval(this.fc.fade_timer);this.fc.fade_timer=null;}if(opt_callback){this.fc.fade_timer=window.setInterval(opt_callback,40);}};GFslideShow.prototype.transitionAnimation=function(){if(this.current&&this.next){var delta=this.delta;var ts=this.options.transitionStep;var now=GFslideShow.timeNow();var tick=now-this.lastTick;this.lastTick=now;delta*=(tick/ts);if(delta<0){return;}var cur_op=this.current.opacity-delta;var next_op=this.next.opacity+delta;this.setOpacity(this.current,cur_op);this.setOpacity(this.next,next_op);if(this.options.transitionAnimationCallback){this.options.transitionAnimationCallback(this.next.opacity);}if(cur_op>0){return;}}this.finishTransition();};GFslideShow.prototype.setNextPhoto=function(){if(this.images.length==0){return;}var ci=this.photo_index;if(++this.photo_index>=this.images.length){this.photo_index=0;}var image=this.images[this.photo_index];if(image&&image.__gfloaded){this.next=image;}else{if(this.photo_index==ci){this.next=this.images[0];}}};GFslideShow.prototype.setPreviousPhoto=function(){var ci=this.photo_index;if(this.images.length!=0){if(--this.photo_index<0){this.photo_index=this.images.length-1;}var image=this.images[this.photo_index];if(image&&image.__gfloaded){this.next=image;}else{if(this.photo_index==ci){this.next=this.images[0];}}}};GFslideShow.prototype.setPhotoIndex=function(index){if(index<0||index>=this.images.length){return;}var image=this.images[index];if(image&&image.__gfloaded){this.next=image;this.photo_index=index;}};GFslideShow.prototype.clearPauseEvents=function(){this.container.onmouseover=null;this.container.onmouseout=null;};GFslideShow.prototype.cleanup=function(){this.clearTransitionTimer();this.clearDisplayTimer();this.clearThumbTimer();this.clearPauseEvents();this.clearNode(this.container);this.container=null;};GFslideShow.prototype.displayNextPhoto=function(){this.display_timer=null;if(!this.started){return false;}if(this.display_paused){return;}if((!this.container||!this.container.parentNode)&&this.options.autoCleanup){this.cleanup();return;}this.setNextPhoto();this.beginTransition();};GFslideShow.prototype.snapToNextPhoto=function(){this.setOpacity(this.next,1);this.setOpacity(this.current,0);this.current=this.next;this.setDisplayTimer();if(this.options.transitionCallback){this.options.transitionCallback(this.entries[this.photo_index],this.options.transitionTime);}if(this.options.fullControlPanel&&this.options.fullControlPanelCursor){var index=(this.photo_index+1)+" / "+this.images.length;this.fc.cursor.innerHTML=index;}};GFslideShow.prototype.beginTransition=function(){if(!this.current||!this.next||(this.current==this.next)){this.setDisplayTimer();return;}if(this.options.transitionTime>=this.options.transitionStep){this.setTransitionTimer();}else{this.snapToNextPhoto();}};GFslideShow.prototype.finishTransition=function(){this.clearTransitionTimer();this.snapToNextPhoto();};GFslideShow.prototype.setOpacity=function(image,opacity){if(image==null){return;}opacity=Math.max(0,Math.min(1,opacity));if(opacity==0){if(image.style.visibility!="hidden"){image.style.visibility="hidden";}}else{if(image.style.visibility!="visible"){image.style.visibility="visible";}}if(this.ie){image.style.filter="alpha(opacity="+opacity*100+")";}image.style.opacity=image.opacity=opacity;};