I am using tinymce control, i want to validate tincymce textarea conrol on asp button click.

I am using Jquery validation engine plugin to validate other controls in same form it is working fine.

How we can make tincmce textarea to validate ?

below is the code how i control other control..

1.   <input id="txtsubject" type="text" runat="server" style="height:20px; width:420px;" class="validate[required] txt" /> 
2.