checkbox 全选与全消

 1
 2    var Flag=true;
 3    function chooseAll()
 4    {
 5        if(Flag)
 6        {
 7            var inputs=document.all.tags("input");
 8            
 9            for (var i=0; i<inputs.length; i++)
10            {
11                if(inputs[i].type=="checkbox" && inputs[i].id!="checkAll")
12                {
13                    inputs[i].checked=true;
14                }
15            }
16            Flag=false;
17        }
18        else
19        {
20            var inputs=document.all.tags("input");
21            for (var i=0; i<inputs.length; i++)
22            {
23                if(inputs[i].type=="checkbox" && inputs[i].id!="checkAll")
24                {
25                    inputs[i].checked=false;
26                }
27            }
28            Flag=true;
29        }
30        
31    }