Hola
ferpumas2007
Este código te vendrá bien:
Código PHP:
<html>
<head>
<script type="text/javascript">
function pasar() {
obj=document.getElementById('sel1');
if (obj.selectedIndex==-1) return;
valor=obj.value;
txt=obj.options[obj.selectedIndex].text;
obj.options[obj.selectedIndex]=null;
obj2=document.getElementById('sel2');
opc = new Option(txt,valor);
eval(obj2.options[obj2.options.length]=opc);
}
</script>
</head>
<body>
<select id="sel1" size="5">
<option value="1">Uno</option>
<option value="2">Dos</option>
<option value="3">Tres</option>
<option value="4">Cuatro</option>
<option value="5">Cinco</option>
</select>
<input type="button" value="Pasar" onClick="pasar()">
<select id="sel2" size="5">
</select>
</body>
</html>
Saludos,
