var isNav, isIE;
var coll = "";
var styleObj = "";
 
if( navigator.appName == "Netscape")
	isNav = true;
else{
	isIE = true;
	coll = "all.";
	styleObj = ".style";
}

function getObject( obj ){
	var theObj;
	if (document.getElementById) { 
		theObj = document.getElementById(obj);
	}
	else{
		if(typeof obj == "string"){
			theObj = eval("document."+coll+obj+styleObj);
		}else{
			theObj = obj;
		}
	}
	return theObj;
}

function hide( obj ){
		var theObj = getObject(obj);
		if (document.getElementById) {
			theObj.style.visibility = "hidden";
		}else{
		theObj.visibility = "hidden";
		}

}

function show( obj ){
		var theObj = getObject(obj);
		if (document.getElementById) {
			theObj.style.visibility = "visible";
		}else{
		theObj.visibility = "visible";
		}
}

function rollOver( imageName, imageSrc, layer ){
		
	if (document.getElementById) { 
		var rollImg = document.getElementsByName(imageName)[0];
		rollImg.src = imageSrc;
	}
	else{
		if( isNav ){
			if( layer != "" ){
				var obj = eval("document."+layer+".document");
				obj.images[imageName].src = imageSrc;
			}
			else{
				document.images[imageName].src = imageSrc;
			}
		}
		else{
			document[imageName].src = imageSrc;
		}
	}
}

var myimages=new Array()
function preloadImages(){
	for (i=0;i<preloadImages.arguments.length;i++){
	myimages[i]=new Image();
	myimages[i].src=preloadImages.arguments[i];
	}
}

function nmpopup(nmurl,nmwidth,nmheight) {
	window.open(nmurl,'nm_popup','width=' + nmwidth + ',height=' + nmheight + ',directories=yes,location=no,menubar=yes,scrollbars=yes,status=no,toolbar=no,resizable=yes')
}