//Chrome Drop Down Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Last updated: June 14th, 06' v2.0

var cssdropdown={
disappeardelay: 300, //set delay in miliseconds before menu disappears onmouseout
disablemenuclick: false, //when user clicks on a menu item with a drop down menu, disable menu item's link?
enableswipe: 1, //enable swipe effect? 1 for yes, 0 for no

//No need to edit beyond here////////////////////////
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) //unclip drop down menu visibility gradually
this.dropmenuobj.style.clip=&quot;rect(0 auto &quot;+this.bottomclip+&quot;px 0)&quot;
}
else
return
this.swipetimer=setTimeout(&quot;cssdropdown.swipeeffect()&quot;, 10)
},

showhide:function(obj, e){
if (this.ie || this.firefox)
this.dropmenuobj.style.left=this.dropmenuobj.style.top=&quot;-500px&quot;
if (e.type==&quot;click&quot; && obj.visibility==hidden || e.type==&quot;mouseover&quot;){
if (this.enableswipe==1){
if (typeof this.swipetimer!=&quot;undefined&quot;)
clearTimeout(this.swipetimer)
obj.clip=&quot;rect(0 auto 0 0)&quot; //hide menu via clipping
this.bottomclip=0
this.swipeeffect()
}
obj.visibility=&quot;visible&quot;
}
else if (e.type==&quot;click&quot;)
obj.visibility=&quot;hidden&quot;
},

iecompattest:function(){
return (document.compatMode && document.compatMode!=&quot;BackCompat&quot;)? document.documentElement : document.body
},

clearbrowseredge:function(obj, whichedge){
var edgeoffset=0
if (whichedge==&quot;rightedge&quot;){
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)  //move menu to the left?
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){ //move up?
edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight
if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) //up no good either?
edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge
}
}
return edgeoffset
},

dropit:function(obj, e, dropmenuID){
if (this.dropmenuobj!=null) //hide previous menu
this.dropmenuobj.style.visibility=&quot;hidden&quot; //hide menu
this.clearhidemenu()
if (this.ie||this.firefox){
obj.onmouseout=function(){cssdropdown.delayhidemenu()}
obj.onclick=function(){return !cssdropdown.disablemenuclick} //disable main menu item link onclick?
this.dropmenuobj=document.getElementById(dropmenuID)
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, &quot;left&quot;)
this.dropmenuobj.y=this.getposOffset(obj, &quot;top&quot;)
this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, &quot;rightedge&quot;)+&quot;px&quot;
this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, &quot;bottomedge&quot;)+obj.offsetHeight+1+&quot;px&quot;
}
},

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(&quot;cssdropdown.dropmenuobj.style.visibility='hidden'&quot;,this.disappeardelay) //hide menu
},

clearhidemenu:function(){
if (this.delayhide!=&quot;undefined&quot;)
clearTimeout(this.delayhide)
},

startchrome:function(){
for (var ids=0; ids<arguments.length; ids++){
var menuitems=document.getElementById(arguments[ids]).getElementsByTagName(&quot;a&quot;)
for (var i=0; i<menuitems.length; i++){
if (menuitems[i].getAttribute(&quot;rel&quot;)){
var relvalue=menuitems[i].getAttribute(&quot;rel&quot;)
menuitems[i].onmouseover=function(e){
var event=typeof e!=&quot;undefined&quot;? e : window.event
cssdropdown.dropit(this,event,this.getAttribute(&quot;rel&quot;))
}
}
}
}
}

}


function changeGif(image){
	src = image.src;
	if(src.indexOf('_off.gif') > 0){
		newSrc = src.replace(/_off.gif/,&quot;_on.gif&quot;);
	}
	else{
		newSrc = src.replace(/_on.gif/,&quot;_off.gif&quot;);
	}
	image.src = newSrc;
}