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; 
}
//--移除弹出层
function removeDiv(){
    var msgTitle=document.getElementById("msgTitle");
    var smalldiv=document.getElementById("smalldiv");
    var zongdiv=document.getElementById("zongdiv");
    var showdivs=document.getElementById("showdivs");
    zongdiv.removeChild(msgTitle);
    zongdiv.removeChild(smalldiv);
    document.body.removeChild(zongdiv);
    document.body.removeChild(showdivs);
}
function SelectAll(tempControl)
 {
    var theBox=tempControl;
    xState=theBox.checked;
    elem=theBox.form.elements;
    for(i=0;i<elem.length;i++)
    {
      if(elem[i].type=="checkbox" && elem[i].id!=theBox.id)
      {
        if(elem[i].checked!=xState)
        {
          elem[i].click();
        }
      }
    }
 }
//删除选中弹出提示
function checkok(){
    len = document.form1.elements.length-1;
    for(i=0,num=0;i<len;i++){
        if(document.form1.elements[i].checked){
            num++;
        }
    }
    if(num<=0){
         alert("您未选中任何复选框");
         return false;
    }
    if(!confirm('确定删除吗，一旦删除将不可恢复？')){
        return false;
    }else{
        return true;
    }
}
//只能输入数字
function onlyNum() 
{ 
if(!(event.keyCode==46)&&!(event.keyCode==8)&&!(event.keyCode==37)&&!(event.keyCode==39)) 
if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105))) 
event.returnValue=false; 
}