<body onclick="w.document.all['addid'].add(new Option(a,b))"> <script> var w=window.open("b.htm") </script>
in a <script> function aa(){ location.href="2.htm?a=b"; } </script> <input type=button onclick="aa()">in b <select id=addid multiple size="10" name="select">
</select> <script> var s= location.search; s= s.substring(1); var s2 = s.split("="); document.all.addid.add(new Option(s2[0],s2[1])) </script>
gua=window.open("b.htm"); gua.document.all.addid.options[gua.document.all.addid.options.length]= new Option(a,b);
<script>
var w=window.open("b.htm")
</script>
<script>
function aa(){
location.href="2.htm?a=b";
}
</script>
<input type=button onclick="aa()">in b
<select id=addid multiple size="10" name="select">
</select>
<script>
var s= location.search;
s= s.substring(1);
var s2 = s.split("=");
document.all.addid.add(new Option(s2[0],s2[1]))
</script>
gua.document.all.addid.options[gua.document.all.addid.options.length]= new Option(a,b);