function OpenWindow(sUrl)
{
	var iWidth = 800;
	var iHeight = 600;
	
	sWinName = "window"+new Date().getTime();		
	window.open(sUrl,sWinName,GetWindowFeatures(iWidth,iHeight));
	
}

function OpenWindowEx(sUrl, iWidth, iHeight)
{	
	sWinName = "window"+new Date().getTime();		
	window.open(sUrl,sWinName,GetWindowFeatures(iWidth,iHeight));
	
}
	
function GetWindowFeatures(winWidth, winHeight)
{
	var leftPosition,topPosition;
	
	leftPosition = (screen.width-winWidth)/2;
	if (leftPosition < 0) leftPosition = 0;
	topPosition  = (screen.height-winHeight)/2;
	if (topPosition < 0) topPosition = 0;
	
	sFeatures =  "width=" + winWidth + ",height=" + winHeight + ",top=" + topPosition + ",left=" + leftPosition;
	sFeatures += ",scrollbars=no,location=no,status=no,menubar=no,toolbar=no,resizable=no";
	
	return sFeatures;
}