var vBrowserType = "";
if (window.navigator.userAgent.indexOf("Firefox") != -1) vBrowserType = "Firefox";
if (window.navigator.userAgent.indexOf("MSIE") != -1) vBrowserType = "IE";
if (window.navigator.userAgent.indexOf("SV1") != -1) vBrowserType = "IESP2";
if (vBrowserType)
{
	var w = screen.availWidth;
	var h = screen.availHeight;
}
function openWindow(url, name, width, height, scrollbar)
{
	self.name = "main"; 
	var leftPos = (w-width)/2, topPos = (h-height)/2;
	popupWin = window.open(url, name, "width=" + width + ",height=" + height + ",scrollbars=" + scrollbar + ",top=" + topPos + ",left=" + leftPos + ",toolbar=no,directories=no,menubar=no");
}

function openWin(winName, urlLoc) {
	l = (screen.availWidth - 620)/2;
	t = (screen.availHeight - 540)/2;
	features  = "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,dependent,height=540,width=620,left=" + l + ",top=" + t;
	winName = winName.replace(/[^a-z]/gi,"_");
	return window.open(urlLoc,winName,features);
}

function checkNum(fldsrc) {
	var vField = fldsrc;
	var vValue = document.getElementById(fldsrc).value;
	var bReset = false;
	if (isNaN(vValue) && vValue != "") {
		bReset = true;
		alert("Item quantity must be a number\n");
	}
	if (vValue.indexOf('.') >= 0) {
		bReset = true;
		alert("Item quantity cannot contain a decimal\n");
	}
	if (bReset == true) {
		document.getElementById(fldsrc).value = "";
		//setTimeout("document.getElementById(vField).focus()", 10);
	}
}