function dynamicSelect(id1, id2) {
    if (document.getElementById && document.getElementsByTagName) {
         var sel1 = document.getElementById(id1);
         var sel2 = document.getElementById(id2);
         var clone = sel2.cloneNode(true);
         var clonedOptions = clone.getElementsByTagName("option");
         refreshDynamicSelectOptions(sel1, sel2, clonedOptions);
         sel1.onchange = function() {
             refreshDynamicSelectOptions(sel1, sel2, clonedOptions);
         };
     }
 }
 function refreshDynamicSelectOptions(sel1, sel2, clonedOptions) {
     while (sel2.options.length) {
         sel2.remove(0);
     }
     var pattern1 = /( |^)(select)( |$)/;
     var pattern2 = new RegExp("( |^)(" +
          sel1.options[sel1.selectedIndex].value + ")( |$)");
     for (var i = 0; i < clonedOptions.length; i++) {
         if (clonedOptions[i].className.match(pattern1) ||
              clonedOptions[i].className.match(pattern2)) {
             sel2.appendChild(clonedOptions[i].cloneNode(true));
         }
     }
 }
 function funcion() {
     dynamicSelect("game-group", "query-type");
 }