<!--        Script by hscripts.com          -->
<!--        copyright of HIOX INDIA         -->
<!-- more scripts @ http://www.hscripts.com -->
<script language="JavaScript">
function validate()
{
        str=(document.getElementById('exp')).value;
        if(str.match(/([\<])([^\>]{1,})*([\>])/i)==null)
         alert("No HTML Tag");
        else
         alert("Contains HTML Tag");
}
</script>
<input type=text name=exp id=exp />
<input type=button value=Enter onClick="validate()">
<!-- Script by hscripts.com -->