function dialogBox(url,width,height){
    var dialogMetrics="height="+(height+40)+",width="+(width+2)+",left="+((screen.width-width)/2)+",top="+((screen.height-height)/2)+",scrollbars=yes";
    var win=window.open(url,'box',dialogMetrics);
    win.resizeTo(width+12,height+70);
    win.moveTo((screen.width-width)/2,(screen.height-height)/6);
    win.focus();
}