Código HTML:
<script type="text/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="form" id="form"> <select name="jumpMenu" id="jumpMenu" onchange="MM_jumpMenu('parent',this,0)"> <option>item1</option> <option>item2</option> <option>item3</option> </select> </form>