function validation()
{ 
     if(document.form1.emailid.value=="")
     { 
	  document.getElementById('error').innerHTML='Please enter Email';
	  document.form1.emailid.className = 'comboerror';
	  document.form1.emailid.focus();
	  return false;
      }
  else
     {
       document.form1.emailid.className = 'combo'; 
     }
	 if(document.form1.message.value=="")
     {
	  document.getElementById('error').innerHTML='Please write Suggestion';
	  document.form1.message.className = 'comboerror';
	  document.form1.message.focus();
	  return false;
      }
  else
     {
       document.form1.message.className = 'combo'; 
     }
	
}
 function is_email(value)
  { 
	  if(!value.match(/^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/) && document.form1.emailid.value!="")
	 { 
	  document.getElementById('error').innerHTML='Your Email ID seems to be incorrect...';
	  document.form1.emailid.className = 'comboerror';
	  document.form1.emailid.value ="";
	  document.form1.emailid.focus();
      return false; 
    }
	else
	{
	document.form1.emailid.className = 'combo';	
	}
  }