function jumpMenu(targ,selObj,restore){ 
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

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 preloadImages() {
	if (document.images) {
		btn_products_over = newImage("images/btn_products_over.gif");
		btn_clients_over = newImage("images/btn_clients_over.gif");
		btn_expertise_over = newImage("images/btn_expertise_over.gif");
		btn_aboutus_over = newImage("images/btn_aboutus_over.gif");
		btn_contactus_over = newImage("images/btn_contactus_over.gif");
		preloadFlag = true;
	}
}