function validateemail(obj) {
    
	var error = 0;
	var msg ='';

	if(obj.email.value =="") {

		error ++;
		msg='Please enter the email Address\n';

    }
	if(obj.email.value !="") {
	if(!checkemail(obj.email.value)) {

		error ++;
		msg +='Please enter a valid email address \n';


	}
	}


	if(error==0) {
		obj.submit();
		return true;
	}
	if(error > 0) {
		alert(msg);
		return false;

	}
}

function checkemail(obj){
 var str=obj;
 var filter=/^.+@.+\..{2,3}$/

 if (filter.test(str))
      return true;
 else {
    return false;
}
}