//Chrome Drop Down Menu v2.01- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Last updated: November 14th 06- added iframe shim technique

var cssdropdown={
disappeardelay: 250, //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
enableiframeshim: 1, //enable "iframe shim" technique to get drop down menus to correctly appear on top of controls such as form objects in IE5.5/IE6? 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="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)" //hide menu via clipping
			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)  //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="hidden" //hide menu
    
    //--Revert the class name to de-selected --//
    document.getElementById(this.dropmenuobj.getAttribute("ParentTab")).className = "moduleMainOptions1980-tdL2";
    
}
this.clearhidemenu()
if (document.getElementById(dropmenuID).innerHTML!="")
{
    
    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)
    
    var parentTab = document.getElementById(obj.getAttribute("ParentTab"));
    
    //-- If the tab is on the far right of the screen, drop the menu to the left --//    
    /*alert(document.getElementById(obj.getAttribute("ParentTab")).offsetWidth);
    if(this.getposOffset(obj, "left")>950)
    {
        
        this.dropmenuobj.x=this.getposOffset(obj, "left");
    }
    else
    {
        this.dropmenuobj.x=this.getposOffset(obj, "left");
    }*/
    this.dropmenuobj.x=this.getposOffset(obj, "left");
    this.dropmenuobj.y=this.getposOffset(obj, "top")
    
    var leftOffset = this.clearbrowseredge(obj, "rightedge");
    if(leftOffset>0)
    {
        leftOffset-=14;
    }
    this.dropmenuobj.style.left=this.dropmenuobj.x-leftOffset+"px"
    //this.dropmenuobj.style.left="100px"
    
    //-- The below "clearbrowseredge bottomedge" needed to be disabled because the menu "drops up" instead of down when it does not fit in the browser --//
    //this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1-2+"px" //-- added -20 --//
    
    
    var spacingMod=0;
    if(this.ie || obj.offsetHeight<35)
    {
        spacingMod=20;
    }
    var menuHeight = obj.parentNode.parentNode.parentNode.parentNode.parentNode.offsetHeight;
    
    
    
    var spacing = 22;
    
    //-- If the level 2 menu is on 2 lines, modify the drop down menu top margin --//
    if(menuHeight>35) 
    {              
        //-- if the actual highlighted menu option is not on two lines... --//
        if(obj.offsetHeight+spacingMod<=55)
        {
            spacing=15
            
        }
        else
        {
            spacing=29;               
            
        }
    }
    
    this.dropmenuobj.style.position="absolute";
    this.dropmenuobj.style.top=this.dropmenuobj.y+obj.offsetHeight-spacing+spacingMod+"px" 
    
    
    
    this.positionshim() //call iframe shim function
    
    var formWidth = document.getElementsByTagName("div")[0].offsetWidth + document.getElementsByTagName("div")[0].offsetLeft;
    
    var dropMenuRight = this.dropmenuobj.offsetWidth+this.getposOffset(this.dropmenuobj, "left")
    
    var dropMenuWidth = this.dropmenuobj.offsetWidth;
          
    var tabWidth = parentTab.offsetWidth;
    if(dropMenuRight>formWidth)
    {        
        this.dropmenuobj.x = this.dropmenuobj.x - (dropMenuWidth - tabWidth) + 2
        this.dropmenuobj.style.left=this.dropmenuobj.x+"px"        
    }
    
    
    //-- Make the parent tab selected --//    
    if(this.dropmenuobj.getAttribute("ParentTab")==null)
    {
        this.dropmenuobj.setAttribute("ParentTab",obj.getAttribute("ParentTab"));
    }    
    document.getElementById(obj.getAttribute("ParentTab")).className  = "moduleMainOptions1980-tdL2Selected";
    
    
	
    }
}
},

positionshim:function(){ //display iframe shim 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"
//-- Below used offsetLeft instead of "this.dropmenuobj.style.left" --//
this.shimobject.style.left=this.dropmenuobj.offsetLeft+"px"
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(){
//-- Added code to revert the parent tab to de-selected state --//
this.delayhide=setTimeout("cssdropdown.dropmenuobj.style.visibility='hidden';document.getElementById(cssdropdown.dropmenuobj.getAttribute(\'ParentTab\')).className = 'moduleMainOptions1980-tdL2'; cssdropdown.hideshim();",this.disappeardelay) //hide menu
},

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){ //if IE5.5 to IE6, create iframe for iframe shim technique
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") //reference iframe object
}
}

}