function IsNumeric(sText, accept) {
	var ValidChars = accept;
	var IsNumber=true;
	var Char;

	for (i = 0; i < sText.length && IsNumber == true; i++) { 
		Char = sText.charAt(i);
		if (ValidChars.indexOf(Char) == -1) {
			IsNumber = false;
		}
	}
	return IsNumber;
}

function validateQty(frm, qty) {
	var myFrm = document.getElementById(frm);
	var myQty = document.getElementById(qty).value;
	if (!IsNumeric(myQty, '0123456789') || myQty.length == 0) {
		alert('Please enter a valid quantity!')
	}
	else {
		myFrm.submit();
	}
}

function openWindow(URL,width,height)
{
    day = new Date();
    id = day.getTime();
    eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width="+width+",height="+height+",left = 50,top = 50');");
    return false;
}