function initImageZoom(_options){var options=$extend({rel:'imagezoom'},_options||{});var elements=$$(document.links).filter(function(el){if((el.rel)&&(el.rel.indexOf(options.rel)!=-1))
return true;else
return false;});for(var i=0;i<elements.length;i++){var el=elements[i];el.addEvent("click",function(){this.blur();var sEl=this;var imgCap="";if(this.getElements("img").length>0)
sEl=this.getElements("img")[0];if((sEl.alt)&&(sEl.alt!=""))
imgCap=sEl.alt;else if(sEl.title)
imgCap=sEl.title;else if(sEl.parentNode.title)
imgCap=sEl.parentNode.title;var _options=$extend({image:this.href,caption:imgCap,startElement:sEl},options||{});_options.image=this.href;_options.caption=imgCap;var imagezoom=new Imagezoom(_options);imagezoom.preloadImage();imagezoom.show();return false;});}}
var Imagezoom=function(_options){var options=$extend({image:false,caption:"",enableCaptions:true,startElement:false,x:10,y:10,initWidth:50,initHeight:50,draggable:true,loadImage:"./include/imagezoom/loading.gif",loadDelay:150,duration:800,closeDuration:500,transition:Fx.Transitions.Cubic.easeOut,startOpacity:0.6,closeText:'Fechar',rel:'imagezoom',showCaptionBar:true,overlay:true,overlayColor:"#FFF",overlayOpacity:.05},_options||{});var box=document.createElement("div");var instance=this;var tl=document.createElement("div");tl.className="s s_tl";var tr=document.createElement("div");tr.className="s s_tr";var bl=document.createElement("div");bl.className="s s_bl";var br=document.createElement("div");br.className="s s_br";var top=document.createElement("div");top.className="s s_top";var bottom=document.createElement("div");bottom.className="s s_bottom";var left=document.createElement("div");left.className="s s_left";var right=document.createElement("div");right.className="s s_right";this.preloadImage=function(){if(options.image!=false){var img=new Image();img.src=options.image;img.style.visibility="hidden";img.style.position="absolute";img.style.top="-9999999999px";img.setAttribute("id","imagezoom-"+options.image);$$('body')[0].appendChild(img);}}
this.getImage=function(){if(($('imagezoom-'+options.image))&&($('imagezoom-'+options.image).width!="0")){var img=$('imagezoom-'+options.image).clone();img.setAttribute("id","");img.style.position="relative";img.style.top="0px";img.style.visibility="visible";}else{instance.preloadImage();window.setTimeout(function(){instance.getImage();},50);}
return img;}
this.show=function(){if(options.image!=false){box.style.position="absolute";box.style.overflow="hidden";box.setAttribute("id","imagezoom-open-"+options.image);if(options.startElement!=false)
options.startElement.blur();var x=options.x;var y=options.y;var boxWidth=options.initWidth;var boxHeight=options.initHeight;if(options.startElement!=false){x=options.startElement.getPosition().x;y=options.startElement.getPosition().y;boxWidth=options.startElement.offsetWidth;boxHeight=options.startElement.offsetHeight;}
box.style.left=x+"px";box.style.top=y+"px";box.style.width=boxWidth+"px";box.style.height=boxHeight+"px";var fx=new Fx.Morph(box);fx.set({opacity:options.startOpacity});box.className="imagezoom";$$('body')[0].appendChild(box);box.style.cursor="pointer";box.addEvent("click",function(){var fx=new Fx.Morph(box,{duration:200});fx.start({opacity:0}).chain(function(){$$('body')[0].removeChild(box);});});this.loadImage();}}
this.loadImage=function(){if(box.getElements(".loading").length==0){var loading=new Image();loading.src=options.loadImage;loading.className="loading";box.appendChild(loading);}
if($('imagezoom-'+options.image)){var el=$('imagezoom-'+options.image);if(el.width!="0"){var newEl=new Image();newEl.src=options.image;window.setTimeout(function(){instance.insertImage(newEl)},options.loadDelay);}else{window.setTimeout(function(){instance.loadImage();},50);}}else{instance.preloadImage();window.setTimeout(function(){instance.loadImage();},50);}}
this.insertImage=function(img){box.removeEvents("click");box.style.cursor="default";box.style.overflow="visible";var w=img.width;var h=img.height;img.style.width=w+"px";img.style.height=h+"px";img.style.padding=5+"px";img.style.cursor="pointer";img.addEvent("click",function(){instance.close(true);});img.className='image';var ptop=(window.getSize().y/2)+window.getScroll().y-(h/2);var pleft=(window.getSize().x/2)+window.getScroll().x-(w/2);var fx=new Fx.Morph(box,{duration:options.duration,transition:options.transition});fx.start({top:ptop,left:pleft,width:w+10,height:h+10,opacity:1}).chain(function(){if(options.overlay==true){if(!$('imagezoom_overlay')){var overlay=$(document.createElement("div"));overlay.setAttribute("id","imagezoom_overlay");overlay.style.backgroundColor=options.overlayColor;overlay.setOpacity(0);$$('body')[0].appendChild(overlay);}else{var overlay=$('imagezoom_overlay');}
overlay.style.width=window.getScrollSize().x+"px";overlay.style.height=window.getScrollSize().y+"px";var overlayfx=new Fx.Morph(overlay,{duration:600});overlayfx.start({opacity:options.overlayOpacity});}
var close=$(document.createElement("div"));close.innerHTML="<span>"+options.closeText+"</span>";close.className="close";close.addEvent("click",function(){instance.close(true);});var loading=box.getElements(".loading");if(loading.length>0)
box.removeChild(loading[0]);var elements=[close,tl,tr,bl,br,top,bottom,left,right,img];for(var i=0;i<elements.length;i++){var elFx=new Fx.Morph(elements[i],{duration:600});elFx.set({opacity:0});box.adopt(elements[i]);elFx.start({opacity:1});}
var caption;if((options.caption!="")&&(options.enableCaptions==true)){caption=document.createElement("div");caption.className="caption";caption.innerHTML="<p>"+options.caption+"</p>";box.appendChild(caption);}
instance.addSetNavigation();if(box.getElements(".caption").length>0){caption=box.getElements(".caption")[0];var cfx=new Fx.Morph(caption,{duration:200});cfx.set({opacity:0});if(options.showCaptionBar==true){caption.className+=" visibleCaption";var cStartFx=new Fx.Morph(caption,{duration:600});cStartFx.start({opacity:1});}
box.addEvent("mouseenter",function(){cfx.start({opacity:1}).chain(function(){caption.className+=" visibleCaption";});});box.addEvent("mouseleave",function(){cfx.start({opacity:0}).chain(function(){caption.className=caption.className.replace(/visibleCaption/g,"");});});close.addEvent("mouseenter",function(){cfx.start({opacity:0}).chain(function(){caption.className=caption.className.replace(/visibleCaption/g,"");});});box.getElements(".image")[0].addEvent("click",function(){var action="show";if(caption.className.indexOf("visibleCaption")!=-1)
action="hide";if(action=="show")
cfx.start({opacity:1}).chain(function(){caption.className+=" visibleCaption";});else
cfx.start({opacity:0}).chain(function(){caption.className=caption.className.replace(/visibleCaption/g,"");});});}
top.style.width=box.offsetWidth+"px";bottom.style.width=box.offsetWidth+"px";left.style.height=box.offsetHeight+"px";right.style.height=box.offsetHeight+"px";if(options.draggable==true)
var move=new Drag.Move(box,{handle:img});});}
this.addSetNavigation=function(){var links=$$(document.links).filter(function(link){if((link.rel)&&(link.rel.indexOf(options.rel)!=-1))
return true;else
return false;});var set=false;for(var i=0;i<links.length;i++){if((links[i].href.indexOf(options.image)!=-1)&&(links[i].rel)&&(links[i].rel.indexOf(options.rel+'['!=-1))){var rel=links[i].getAttribute("rel");set=instance.scanRel("after",options.rel+"[",this.scanRel("before","]",rel));}}
if(set!=false){var prevLink=false;var nextLink=false;var setLinks=new Array();for(i=0;i<links.length;i++){if(links[i].rel.indexOf(options.rel+"["+set+"]")!=-1){setLinks[setLinks.length]=links[i];}}
for(i=0;i<setLinks.length;i++){var link=setLinks[i];if((link.href.indexOf(options.image)!=-1)&&(link.rel)&&(link.rel.indexOf(options.rel!=-1))){if(i!=0)
prevLink=setLinks[i-1];if(i!=setLinks.length-1)
nextLink=setLinks[i+1];}}
if((prevLink!=false)||(nextLink!=false)){if(box.getElements(".caption").length==0){var caption=document.createElement("div");caption.className="caption";box.appendChild(caption);}else{var caption=box.getElements(".caption")[0];}}
if(prevLink!=false){var previousButton=$(document.createElement("div"));previousButton.className="previous";var prevCap='';if(prevLink.title)
prevCap=prevLink.title;var prevEl=prevLink;if(prevLink.getElements("img").length>0)
prevEl=prevLink.getElements("img")[0];previousButton.addEvent("click",function(){var newOptions=$unlink(options);var imagezoomPrev=new Imagezoom($extend(newOptions,{image:prevLink.href,caption:prevCap,rel:options.rel,startElement:prevEl,showCaptionBar:true}));instance.close();imagezoomPrev.show();});caption.appendChild(previousButton);}
if(nextLink!=false){var nextButton=$(document.createElement("div"));nextButton.className="next";var nextCap='';if(nextLink.title)
nextCap=nextLink.title;var nextEl=nextLink;if(nextLink.getElements("img").length>0)
nextEl=nextLink.getElements("img")[0];nextButton.addEvent("click",function(){var newOptions=$unlink(options);var imagezoomNext=new Imagezoom($extend(newOptions,{image:nextLink.href,caption:nextCap,rel:options.rel,startElement:nextEl,showCaptionBar:true}));instance.close();imagezoomNext.show();});caption.appendChild(nextButton);}}}
this.scanRel=function(where,needle,string){var newstring='';if(where=="after"){var startpos=string.indexOf(needle)+needle.length;var endpos=string.length;}else if(where=="before"){var startpos=0;var endpos=string.indexOf(needle);}
for(var i=startpos;i<endpos;i++){newstring+=string.charAt(i);}
return newstring;}
this.close=function(hideOverlay){var img=box.getElements(".image")[0];box.removeChild(img);var close=box.getElements(".close")[0];box.removeChild(close);var caption=box.getElements(".caption");if(caption.length>0)
box.removeChild(caption[0]);var s=box.getElements(".s");for(var i=0;i<s.length;i++)
box.removeChild(s[i]);var x=options.x;var y=options.y;var boxWidth=options.initWidth;var boxHeight=options.initHeight;if(options.startElement!=false){x=options.startElement.getPosition().x;y=options.startElement.getPosition().y;boxWidth=options.startElement.offsetWidth;boxHeight=options.startElement.offsetHeight;}
if((hideOverlay==true)&&($('imagezoom_overlay'))){var oFx=new Fx.Morph($('imagezoom_overlay'),{duration:options.closeDuration});oFx.start({opacity:0}).chain(function(){$$('body')[0].removeChild($('imagezoom_overlay'));});}
var fx=new Fx.Morph(box,{duration:options.closeDuration});fx.start({left:x,top:y,width:boxWidth,height:boxHeight,opacity:options.startOpacity}).chain(function(){fx.start({opacity:0}).chain(function(){$$('body')[0].removeChild(box);});});}}