<form name='form1' method='post' onsubmit='cm(this)'></form>
<form name='form2' method='post' onsubmit='cm(this)'></form>
<SCRIPT>
function cm(toform){
message=confirm("删除吗?。")
   if(message==true)
   toform.submit();
   else
   return false;
}</SCRIPT>