var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		over_home = newImage('images/menu/on_home.gif');
		over_aboutus = newImage('images/aboutus_z.gif');
		over_ourservice = newImage('images/ourservice_z.gif');
		over_systemworks = newImage('images/systemworks_z.gif');
		over_contact = newImage('images/contact_z.gif');
		preloadFlag = true;
	}
}
function changeImages() {
	d = document;
	if (d.images) {
		var img;
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			img = null;
			if (d.layers) {img = findElement(changeImages.arguments[i],0);}
			else {img = d.images[changeImages.arguments[i]];}
			if (img) {img.src = changeImages.arguments[i+1];}
		}
	}
}
var i=0;
function displayWindow(url, width, height, name) {
         var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ', name=' + name + ',resizable=yes,scrollbars=no,menubar=no,left=1,top=0,' );

}