function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;

function preloadMenuImages() {
	if (document.images) {
		img_01_over = newImage("/global/img/pix/clear.gif");
		preloadFlag = true;
	}
	//preload background images for navigation
	MM_preloadImages('img_global/nav_bg.gif','img_global/nav_bg_on.gif');
	if (document.all && document.getElementById) {
		navRoot = document.getElementById("topNav");
		LIlist = navRoot.getElementsByTagName("LI");
		for (i=0; i<LIlist.length; i++) {
		  LIlist[i].onmouseover=function() {
			this.className+=" over";
		  }
		  LIlist[i].onmouseout=function() {
			this.className=this.className.replace(" over", "");
		  }
		}
	}
}

function MM_preloadImages() { //v3.0
 var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
   var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
   if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}