Untitled

<!DOCTYPE html>
 <html>
 <head>
 	<title>Select</title>
 </head>
 <body>
		<select id="lista_izquierda" multiple size="5" id="lista_izquierda">
 			<option id="1" >Volvo</option>
 			<option id="2">Mazda</option>
 			<option id="3">Chevrolet</option>
 			<option id="4">KIA</option>
 			<option id="5">Ford</option>
 		</select>

			<input type="button" onclick="PasarParametro()" value="PASAR" />
			<input type="button" onclick="RegresarParametro()" value="REGRESAR"/>

 		<select  id="lista_derecha" multiple size="5" >
	 	</select>
</body>
<script>

	function PasarParametro(){
		obj = document.getElementById('lista_izquierda');
		if(obj.selectedIndex == -1){
			return;
		}
		valor = obj.id;
		txt = obj.options[obj.selectedIndex].text;

		obj.options[obj.selectedIndex] = null;

		obj2 = document.getElementById('lista_derecha');
		opc = new Option(txt, valor);

		eval(obj2.options[obj2.options.length] = opc);
		return false;
	}
	function RegresarParametro(){
		obj = document.getElementById('lista_derecha');
		if(obj.selectedIndex == -1){
			return;
		}
		valor = obj.id;
		txt = obj.options[obj.selectedIndex].text;
		obj.options[obj.selectedIndex] = null;
		obj2 = document.getElementById('lista_izquierda');
		opc = new Option(txt, valor);
		eval(obj2.options[obj2.options.length] = opc);
		return false;
	}
</script>
</html>