var Agent = navigator.userAgent;
var Available_Height = screen.availHeight;
var wnn = "";
var wie = "";
// initialize the value of "browser"
var browser = "oldAndInTheWay";
var bName = navigator.appName;
var bVersion = parseInt(navigator.appVersion);
// initialise "formWin"
var formWin = null;
function formOpener() {
	if (Agent.indexOf("Mac")!=-1) {
//		alert("Mac");
		wnn = "570";
		wie = "560";
	} else if (Agent.indexOf("Win")!=-1) {
//		alert("Win");
		wnn = "570";
		wie = "560";
	} else {
//		alert("unknown");
		wnn = "570";
		wie = "560";
	}
// check for Netscape
	if (bName == "Netscape") {
  	browser = "ns" + bVersion;
//  	alert(browser);
		if (formWin != null && formWin.open) {
//			alert (formWin);
			return;
		} else {
			formWin = window.open("form.html","order","width=" + wnn +",height=400,scrollbars=yes,location=no,directories=no,status=yes,toolbar=yes,resizable=yes");
//			alert (formWin);
		}
// check for MSIE
	} else if (bName == "Microsoft Internet Explorer") {
 	browser = "ie" + bVersion;
//  	alert(browser);
		if (formWin != null && formWin.open) {
//			alert (formWin);
			return;
		} else {
			formWin = window.open("form.html","order","width=" + wie +",height=400,scrollbars=yes,location=no,directories=no,status=yes,toolbar=yes,resizable=yes");
//			alert (formWin);
		}
  	} else {
//  	alert(browser);
			if (formWin != null && formWin.open) {
//			alert (formWin);
			return;
		} else {
			formWin = window.open("form.html","order","width=" + wie +",height=400,scrollbars=yes,location=no,directories=no,status=yes,toolbar=yes,resizable=yes");
//			alert (formWin);
		}
	}
}