Validationgroup fails for validators

Hello all,
i have a problem while using validator controler in asp.net i.e regular exp and required validators.
in mater page there is code is as follows:




<div style="width:60%; height:auto; float:left;" > <h1>
                    Market Reports</h1>
                    </div>                    
                    <div style="width:40%;  height:auto; float:right;" >
                    
  ...