www.gusucode.com > 黑色化妆品类企业网站织梦模板（demo126） > 黑色化妆品类企业网站织梦模板（demo126）/www7/style/js/dropdown.js

    var cssdropdown={disappeardelay:250,disablemenuclick:false,enableswipe:1,enableiframeshim:1,dropmenuobj:null,ie:document.all,firefox:document.getElementById&&!document.all,swipetimer:undefined,bottomclip:0,getposOffset:function(what,offsettype){var totaloffset=(offsettype=="left")?what.offsetLeft:what.offsetTop;var parentEl=what.offsetParent;while(parentEl!=null){totaloffset=(offsettype=="left")?totaloffset+parentEl.offsetLeft:totaloffset+parentEl.offsetTop;parentEl=parentEl.offsetParent;}
return totaloffset;},swipeeffect:function(){if(this.bottomclip<parseInt(this.dropmenuobj.offsetHeight)){this.bottomclip+=10+(this.bottomclip/10)
this.dropmenuobj.style.clip="rect(0 auto "+this.bottomclip+"px 0)"}
else
return
this.swipetimer=setTimeout("cssdropdown.swipeeffect()",10)},showhide:function(obj,e){if(this.ie||this.firefox)
this.dropmenuobj.style.left=this.dropmenuobj.style.top="-500px"
if(e.type=="click"&&obj.visibility==hidden||e.type=="mouseover"){if(this.enableswipe==1){if(typeof this.swipetimer!="undefined")
clearTimeout(this.swipetimer)
obj.clip="rect(0 auto 0 0)"
this.bottomclip=0
this.swipeeffect()}
obj.visibility="visible"}
else if(e.type=="click")
obj.visibility="hidden"},iecompattest:function(){return(document.compatMode&&document.compatMode!="BackCompat")?document.documentElement:document.body},clearbrowseredge:function(obj,whichedge){var edgeoffset=0
if(whichedge=="rightedge"){var windowedge=this.ie&&!window.opera?this.iecompattest().scrollLeft+this.iecompattest().clientWidth-15:window.pageXOffset+window.innerWidth-15
this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetWidth
if(windowedge-this.dropmenuobj.x<this.dropmenuobj.contentmeasure)
edgeoffset=this.dropmenuobj.contentmeasure-obj.offsetWidth}
else{var topedge=this.ie&&!window.opera?this.iecompattest().scrollTop:window.pageYOffset
var windowedge=this.ie&&!window.opera?this.iecompattest().scrollTop+this.iecompattest().clientHeight-15:window.pageYOffset+window.innerHeight-18
this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetHeight
if(windowedge-this.dropmenuobj.y<this.dropmenuobj.contentmeasure){edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight
if((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure)
edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge}}
return edgeoffset},dropit:function(obj,e,dropmenuID){if(this.dropmenuobj!=null)
this.dropmenuobj.style.visibility="hidden"
this.clearhidemenu()
if(this.ie||this.firefox){obj.onmouseout=function(){cssdropdown.delayhidemenu()}
obj.onclick=function(){return!cssdropdown.disablemenuclick}
this.dropmenuobj=document.getElementById(dropmenuID)
if(!this.dropmenuobj)return;this.dropmenuobj.onmouseover=function(){cssdropdown.clearhidemenu()}
this.dropmenuobj.onmouseout=function(e){cssdropdown.dynamichide(e)}
this.dropmenuobj.onclick=function(){cssdropdown.delayhidemenu()}
this.showhide(this.dropmenuobj.style,e)
this.dropmenuobj.x=this.getposOffset(obj,"left")
this.dropmenuobj.y=this.getposOffset(obj,"top")
this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj,"rightedge")+"px"
this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj,"bottomedge")+obj.offsetHeight+1+"px"
this.positionshim()}},positionshim:function(){if(this.enableiframeshim&&typeof this.shimobject!="undefined"){if(this.dropmenuobj.style.visibility=="visible"){this.shimobject.style.width=this.dropmenuobj.offsetWidth+"px"
this.shimobject.style.height=this.dropmenuobj.offsetHeight+"px"
this.shimobject.style.left=this.dropmenuobj.style.left
this.shimobject.style.top=this.dropmenuobj.style.top}
this.shimobject.style.display=(this.dropmenuobj.style.visibility=="visible")?"block":"none"}},hideshim:function(){if(this.enableiframeshim&&typeof this.shimobject!="undefined")
this.shimobject.style.display='none'},contains_firefox:function(a,b){while(b.parentNode)
if((b=b.parentNode)==a)
return true;return false;},dynamichide:function(e){var evtobj=window.event?window.event:e
if(this.ie&&!this.dropmenuobj.contains(evtobj.toElement))
this.delayhidemenu()
else if(this.firefox&&e.currentTarget!=evtobj.relatedTarget&&!this.contains_firefox(evtobj.currentTarget,evtobj.relatedTarget))
this.delayhidemenu()},delayhidemenu:function(){this.delayhide=setTimeout("cssdropdown.dropmenuobj.style.visibility='hidden'; cssdropdown.hideshim()",this.disappeardelay)},clearhidemenu:function(){if(this.delayhide!="undefined")
clearTimeout(this.delayhide)},startchrome:function(){for(var ids=0;ids<arguments.length;ids++){var menuitems=document.getElementById(arguments[ids]).getElementsByTagName("a")
for(var i=0;i<menuitems.length;i++){if(menuitems[i].getAttribute("rel")){var relvalue=menuitems[i].getAttribute("rel")
menuitems[i].onmouseover=function(e){var event=typeof e!="undefined"?e:window.event
cssdropdown.dropit(this,event,this.getAttribute("rel"))}}}}
if(window.createPopup&&!window.XmlHttpRequest){document.write('<IFRAME id="iframeshim"  src="" style="display: none; left: 0; top: 0; z-index: 90; position: absolute; filter: progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)" frameBorder="0" scrolling="no"></IFRAME>')
this.shimobject=document.getElementById("iframeshim")}}}
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