function popup(url, name, width, height, scroll){

	// screen resolution
	var scrheight = screen.availHeight;
	var scrwidth = screen.availWidth;
	
	// where to position the window
	var toppos = 0;
	var leftpos = 0;
	
	command = "aWindow=window.open('" + url + "', '" + name +"', 'width=" + width + ",height=" + height + ",scrollbars=" + scroll + ",toolbar=no,menubar=no,top=" + toppos +",left="+ leftpos +",screenX="+ toppos +",screenY="+ leftpos +",resizable=yes')";
	eval(command);

}