function referToFriend(objForm){
			
	emailRegEx = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;

	if(objForm.txtEmail.value == ''){
		alert("Please enter your Email address.");
		objForm.txtEmail.focus();
		return false;
	}
	else if(!emailRegEx.test(objForm.txtEmail.value)){
			alert("Please enter valid email address.");
			objForm.txtEmail.focus();
			return false;
	}
	else{
		objForm.submit();
	}

}