// Used to open a generic popup window
function OpenVariableWindow(link, winName, intWidth, intHeight){
	var newWindow;
	var screenWidth = screen.width;
	var displayPos = ((screenWidth/2) - (intWidth/2));
	newWindow = window.open( link, winName, "toolbar,width=" + intWidth + ",height=" + intHeight + ",left=" + displayPos + ",scrollbars,resizable");
	newWindow.focus();
}


//Browser detection
function IsIEBrowser() {
	var browsername = navigator.appName;
	
	if (browsername.indexOf("Microsoft")!=-1) {
		IsIEBrowser = true;
	}
	else {
		IsIEBrowser = false;
	}
}

function topNavImageOn(img) {
	var src = img.src.replace('_on.gif', '');
	src = src.replace('.gif', '');

	img.src = src + '_on.gif';
}

function topNavImageOff(img, src) {
	img.src = src;
}