一个无重复排序的js

<script language="javascript">
<!--
function setValue(element,elementValue){
 with(document.updatePhoto){
  if(//D/.test(elementValue)){
   alert("Minimum 1 - maximum 20 char long.");
   reset();
  }
  else if(parseInt(eval(element).value) > parseInt(recordCount.value)){
   alert("Maximum 20 char long.'"+ recordCount.value);
   eval(element).focus();
  }
  else if(parseInt(elementValue) == 0){
   alert("Minimum 1 - maximum 20 char long.");
   reset();
  }
  for(var i = 0; i < parseInt(recordCount.value);i++){
   var swapName = eval(element.split("_")[0] + "_" + i);//取得将用于交互的对象"photoOrder_" + i
   var swapValue =swapName.value;//取得将用于交互的元素"photoOrder_" + i 的值 
   var currentHiddenName = eval(element + "_value");//取得当前所修改元素的隐藏对象photoOrder_" + i + "_value"
   var currentHiddenValue = currentHiddenName.value;//当前所修改元素的隐藏对象的原值
   var swapHiddenName = eval(element.split("_")[0] + "_" + i + "_value");//取得交互元素的隐藏对象photoOrder_" + i + "_value"
   var swapHiddenValue = swapHiddenName.value;//交互元素的隐葳对象的原值
   if(swapName != eval(element) && swapValue==elementValue){
    swapName.value = currentHiddenValue;
    currentHiddenName.value = swapHiddenValue
    swapHiddenName.value = currentHiddenValue;
   }
  }
 }
}
//-->
</script>