Jump box

Hvordan får jeg jump boxen til åbne et nyt i et nyt vindue?


<script language="JavaScript">
<!--
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
//-->
</script>



<form name="bGform" method="get">
                <div align="center">
          <select style="width:125px;BACKGROUND-COLOR: #CCCCCC;font: 7pt Arial; name="BG" target="_blank" onChange="MM_jumpMenu('parent',this,0)" name="select" size="3">
            <option value="http://xxxx" selected>xxxx</option>
            <option value="http://www.xxxx">xxxxx</option>
            <option value="http://www.xxxx">xxxx</option>
            <option value="http://www.xxxx">xxxx</option>
            <option value="http://xxxx">xxxx  </option>
          </select>
        </div>
              </form>