function popup(width, height, url, name, scrollbars) {  
	screenWidth = screen.width;

	popupLeft = ( screenWidth / 2 ) - ( width / 2 );     

	myWindow = window.open(url,name,"toolbar=0,scrollbars=" + scrollbars + ",location=0,status=0,menubar=0,width=" + width + ",height=" + height + ",left=" + popupLeft );
	myWindow.focus();
}