JS显示或隐藏层的函数

/*
========================
函数：显示或隐藏层
showDiv(divId_array,showLocality_array)
参数说明：
divId_array 所有要操作的层ID，用逗号分隔
showLocality_array 所有要显示的层在参数DivIdArray所对应的位置。为“0”或空时全部显示，设为负数则全部隐藏。
例如：showDiv('div3,div1,div2','2,3')为显示第二个(div1)和第三个层(div2)，第一个层(div3)将被隐藏。
========================
*/
function showDiv(divId_array,showLocality_array)
{
 var div_array = new Array();
 var locality_array = new Array();
 var intLocality;//showLocality_array数组长度
 var intDiv;//div_array 数组长度
 var intTemp = 1;//临时变量
 var intTmp = 1;//临时变量
 
 //初始化
 if (divId_array)
 {
  div_array = divId_array.split(",");
 }else{
  intDiv = 0;
 }
 if (showLocality_array)
 {
  locality_array = showLocality_array.split(",");
  intLocality = locality_array.length;

  for (var n = 0;n < intLocality;n++)
  {
   intTemp *= locality_array[n];
   
  }
  if (intTemp <= 0)
  {
   intLocality = intTemp;
  }else{
   intLocality = div_array.length;

  while (intLocality > 0)
  {
   intLocality -= 1;
   document.getElementById(""+ div_array[intLocality] +"").style.display = "none";
  }
   intLocality = 1;
  }
 }else{
  intLocality = 0;
 }

 //显示指定层
 if (intDiv != 0 && intLocality >0)
 {
  intDiv = div_array.length;
  intLocality = locality_array.length;
  
  //排序locality_array 数组
  for (var n = 0;n < intLocality;n++)
  {
   intTemp = locality_array[n];
   
   for (var m = n + 1;m < intLocality;m++)
   {
    if (locality_array[n] > locality_array[m])
    {
     locality_array[n] = locality_array[m];
     locality_array[m] = intTemp;
     intTemp = locality_array[n];
    }
   }
  }
  
  intLocality = locality_array.length;
  intTemp = 0;
  
  //
  while (intTemp < intLocality)
  {
   if ((locality_array[intTemp] - 1) < div_array.length)
   {
    intTmp = locality_array[intTemp] - 1;
    document.getElementById(""+ div_array[intTmp] +"").style.display = "block";
   }
   
   intTemp += 1;
  }
 }
 else if(intLocality == 0)
 {//显示所有层
  intLocality = div_array.length;

  while (intLocality > 0)
  {
   intLocality -= 1;
   document.getElementById(""+ div_array[intLocality] +"").style.display = "block";
  }
 }else{//隐藏所有层
  intLocality = div_array.length;

  while (intLocality > 0)
  {
   intLocality -= 1;
   document.getElementById(""+ div_array[intLocality] +"").style.display = "none";
  }
 }
}