var popWin = 0;
function popup(popupUrl, windowWidth, windowHeight)
{
	if(popWin)
	{
	if(!popWin.closed) popWin.focus();
	}
	
	// Window params	
	var showToolBar = "no";
	var showLocation = "no";
	var showDirectories = "no";
	var showStatus = "no";
	var showMenuBar = "no";
	var showScrollBars = "yes";
	var isResizable = "yes";
	var copyHistory = "no";
	
	popWin = window.open(popupUrl,"popWin", "toolbar="+showToolBar+", location="+showLocation+", directories="+showDirectories+", status="+showStatus+", menubar="+showMenuBar+", scrollbars="+showScrollBars+", resizable="+isResizable+", copyhistory="+copyHistory+", width="+windowWidth+", height="+windowHeight)
}