var str="";

function go(){
    if(document.myform.myselect.options[document.myform.myselect.selectedIndex].value){
         top.op_body.location=document.myform.myselect.options[document.myform.myselect.selectedIndex].value;
    }
}


str+='<table cellspacing="4" cellpadding="1" border="0">';
str+='<form name="myform">';
str+='<td><center>';
str+='<select name="myselect">';
str+='<OPTION selected value="serch.htm">インターネット検索</OPTION>';
str+='<OPTION value="bgm.htm">Streeming Radio</OPTION>';
str+='<OPTION value="timer.htm">絶対時感テスト</OPTION>';
str+='</select>';
str+='</center></td>';
str+='<tr><td><center><input type="button" name="Button1" value="CHOICE" onClick="go()"></center></td>';
str+='</form>';
str+='</tr>';
str+='</table>';

document.write(str);