function checkform(frm)		
{
	
	 var errormsg = '';
	 var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;	
	 
if (!filter.test(frm.email.value)) 
		{ errormsg += ' Invalid E-mail format, Please Fill in your E-mail address. '+ '\n'  }

if (frm.subject.value =="")
		{ errormsg += ' Please Fill in the Subject field. '+ '\n'  }
		
if (frm.messagetxt.value =="")
		{ errormsg += ' Please Fill in some information in the Message field. ' + '\n' }	

if (frm.verif_box.value =="")
		{ errormsg += ' Please Fill in the verification box. ' + '\n' }	

	if (errormsg > '')
		{ alert(errormsg);
			return false;  }	
	else
	  {  return true; }
 
}