// Global variable
var popWindow



// Opens popup window
function openWindow(url, width, height){
	
	closeWindow();
	
	var options = "toolbar=0,scrollbars=1,resizable=1,width=" + width + ",height=" + height + ",left=30,top=30";
	popWindow = window.open(url, "popWindow", options);
	popWindow.focus();
	
}



// Closes popup window if open
function closeWindow(){
	
	if (popWindow && !popWindow.closed)
		popWindow.close();
		
}