http://topic.csdn.net/t/20041203/13/3612705.html
JScript
<script language= "JScript ">
function abc() {
return false;
}
</script>
<form onsubmit= "return abc(); "> </form>
VBScript
<script language= "VBScript ">
Function abc()
window.event.returnValue = False
End Function
</script>
<form onsubmit= "abc "> </form>