function $() {
  var elements = new Array();
  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);
    if (arguments.length == 1)
      return element;
    elements.push(element);
  }
  return elements;
}
/* 表单重置*/
function Reset()
{ 
  var input=document.getElementsByTagName("input");
  for(var i in input)
  {
   if(input[i].type=="text"&&input[i].disabled!=true)
   {
    input[i].value="";
   }
  }
  var textarea=document.getElementsByTagName("textarea");
  for(var n in textarea)
  {
    textarea[n].value="";
  }
}
/*选择select*/
function SelectCheck(obj)
{
  var  flag=false;
  for(var i=0;i<obj.options.length;i++)
     {
      if(obj.options(i).selected==true)
      {
       flag=true;
       break;
      }
     }
    return flag;
}