function changeImage(btn, img)
    {
        var objBtn = eval("document." + btn);
        objBtn.src = img;
    }

function popNewWindow(PopURL,PopHeight,PopWidth,WindowName)	{
	modalX=(screen.width-PopWidth)/2
	modalY=(screen.height-PopHeight)/2
	//Open New Window
	var WinPlace='"resizable=yes,scrollbars=yes,height='+PopHeight+',width='+PopWidth+',screenx='+modalX+',screenY='+modalY+',left='+modalX+',top='+modalY+'"'
	OpenStr=window.open(PopURL, WindowName, WinPlace)
	OpenStr.focus()
}


var NS=(navigator.appName == "Netscape");
	mac=navigator.appVersion.indexOf("Mac");
	if (mac>=0) {mac=1} else {mac=0}
	IE=(document.all) ? true : false; 
	eID=document.getElementById;
	if(eID && NS) {NS6=true} else {NS6=false}
	if ((IE) || (NS6)) {dhtml=1;}
	
	function makeRef(refElement) {
		if (NS6) {var prefix="document.getElementById('"+refElement+"')"}
		if (IE) {var prefix="document.all."+refElement}
		return prefix;
	}
	
	// begin NAV
	function MakeArray(n){
	   this.length = n;
	   for (var i = 1; i<=n; i++)
	      this[i] = new Image();
	   return this;
	}
	
	
	var lnkName=new Array(makeRef('nav0'),makeRef('nav1'),makeRef('nav2'),makeRef('nav3'),makeRef('nav4'));
	function navOn(num){
		eval (lnkName[num]+".className ='nav3'");
		eval ("document." + imgName[num] + ".src ='" + nav_on[num].src +"'");}
	function navOff(num){
		eval (lnkName[num]+".className ='nav1'");
		eval ("document." + imgName[num] + ".src ='" + nav_off[num].src +"'");}
	px=""; 
	menuOn=-1; 
	menuTop=164; 
	ext=5;
	layerLeft=0; 
	aryLayerY=new Array;
	aryLayerX=new Array;
	menuLeft=new Array(0,234,360,484,608);
	function menuInit() { 
		for (m=0;m<8;m++) {
			layerRef= makeRef("menu"+m);
			aryLayerY[m]=eval(layerRef+".offsetHeight+menuTop");
			aryLayerX[m]=eval(layerRef+".offsetWidth+5");
		}
	}
	function eventYell(menuEvents) {
		var layerRef=makeRef("menu"+menuOn);
		mouseY=(IE) ? event.y+menuTop : menuEvents.pageY+menuTop;
		mouseX=(IE) ? event.x : menuEvents.pageX;
		minmouseY=(IE) ? (menuTop - document.body.scrollTop - 20) : (menuTop-20);
		var menuRef=makeRef("menuHead"+menuOn);
	  	if(
			(mouseY >(aryLayerY[menuOn]+menuTop+ext)) || 
			((mouseY - menuTop) < minmouseY ) || 
			(mouseX < (layerLeft - 10)) || 
			(mouseX > (aryLayerX[menuOn]+layerLeft))
		){
			eval(layerRef+".style.visibility='hidden'");
			navOff(menuOn);
	 		document.onmousemove=null;
		}
	}
	function navMenu(mID) {
		navOn(mID);
		layerRef= makeRef("menu"+menuOn);
		if (menuOn != mID && menuOn != -1){
			eval(layerRef+".style.visibility='hidden'");
			if (menuOn>=0){navOff(menuOn)}
		}
		menuOn=mID;
		if(dhtml){
			browserwidth=(document.body.offsetWidth);
			xf=browserwidth - 770;
			layerLeft=(browserwidth > 770) ? (xf/2+menuLeft[menuOn]) : (menuLeft[menuOn]+8);
			layerRef= makeRef("menu"+menuOn);
			eval(layerRef+".style.left ='"+layerLeft+"px'");
			eval(layerRef+".style.visibility='visible'");
			if(document.layers){document.captureEvents(Event.MOUSEMOVE);}
			document.onmousemove=eventYell;
			if (IE){ document.onmouseover=null }
			else{ document.releaseEvents(Event.MOUSEOVER)};
		}
	}