function checkEmail(theEmail)
{
	regex=  /^[a-zA-Z0-9]+[\._]?[a-zA-Z0-9]+[\._]?[a-zA-Z0-9]+@[a-zA-Z0-9]{1,16}.[a-z]{1,3}[\.]{1}[a-z]{1,3}$/;
	if (regex.test(theEmail))
		return true;
	else
		return false;
}


function check_feedback(frm)
{
  
  var email = frm.email.value;
  
  
  
  var errs = 0;
  var alrt = "Please check the following error(s)\n-----------------------------------------------------------";
  
 	
  if(email.length==0){
	  errs++;
	  alrt += "\n["+errs+"] Please enter email id";
  }else
  if(!checkEmail(email)){
      errs++;
	  alrt += "\n["+errs+"] Please enter valid email id";
  }	

  
  
  if(errs>0){
	  alert(alrt);
	  return false;
  }
  
  return true;

}