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) {
		nav_02_over = newImage("images/nav_02-over.jpg");
		nav_04_over = newImage("images/nav_04-over.jpg");
		nav_06_over = newImage("images/nav_06-over.jpg");
		nav_08_over = newImage("images/nav_08-over.jpg");
		nav_10_over = newImage("images/nav_10-over.jpg");
		nav_12_over = newImage("images/nav_12-over.jpg");
		nav_14_over = newImage("images/nav_14-over.jpg");
		nav_14_over = newImage("images/nav_14-over.jpg");
		preloadFlag = true;
	}
}

preloadImages()		

	function loginvalid()
	{
	if(document.frmlogin1.username.value=="")
	{
		alert("UserName is Required");
		document.frmlogin1.username.focus();
		return false;
	}
	if(document.frmlogin1.Password1.value=="")
	{
		alert("Password is Required");
		document.frmlogin1.Password1.focus();
		return false;
	}
		return true;
	}