function openWindow(target_url,width_size,height_size,scroll)
{
	var R_URL="";
	var farwindow=null;
	R_URL =target_url;
	farwindow=window.open('','open_win','width=1,height=1,left=3000,top=3000');
    if (farwindow !=null) 
    {
		farwindow.close();
		farwindow=window.open('','open_win','width='+eval(width_size)+',height='+eval(height_size)+',left=10,top=10,scrollbars='+scroll);
        farwindow.location.href=R_URL;
		farwindow.focus();
    }
}