var isIE = false;
var isN4 = false;

var aryAppVersion = navigator.appVersion.split( ' ');

if (navigator.appName == 'Microsoft Internet Explorer') {
	isIE = true;

	//since IE4 does not support the document.getElementById() method
	if ((aryAppVersion[ 0] >= 4) && (aryAppVersion[ 0] < 5)) {
		if (document.getElementById == null) {
			document.getElementById = document.all;
		}
	}
}
if (navigator.appName == 'Netscape') {
	if (aryAppVersion[ 0] >= 5.0) {
		isIE = true;
	}
	else if (aryAppVersion[ 0] >= 4.0) {
		isN4 = true;
	}
}

var g_windowHeigth, g_windowWidth;

function initJsEnv() {
	if (isIE || isN4) {
//		if (g_degLayerCount > 0) {
//			window.onresize = degLayerReload;
//		}

		g_windowHeigth = getWindowHeight();
		g_windowWidth = getWindowWidth();
	}
}