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()", 20); //<- czas rozwijania dla podmenu
    },

    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;
//Odremowano dla potrzeb KP - by menu zawsze się rozwijało do dołu
//		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);
    	    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");
	}
    }
}