function clear_text(f, name) {
    f.elements[name].value="";
}

function product_search_new() {
  if (document.form1.searchinput.value == "½Ð¿é¤JÃöÁä¦r") {
    document.form1.elements['searchinput'].value="";
   }
   var searchlist = document.form1.elements['searchlist'].value;
   var searchinput = document.form1.elements['searchinput'].value;
   location.href="http://fate.yam.com/product_search_new.php?searchlist=" + searchlist + "&searchinput=" + encodeURI(searchinput);
}