function emailCheck(lsEmail){
  	var tmp = "";
	var item_length = lsEmail.length;
	var item_length_minus_1 = lsEmail.length - 1;
	for (index = 0; index < item_length; index++){
		if (lsEmail.charAt(index) != ' '){
			tmp += lsEmail.charAt(index);
		}else{
			if (tmp.length > 0){
				if (lsEmail.charAt(index+1) != ' ' && index != item_length_minus_1){
					return false;
				}
			}
		}
	}
	return lsEmail.match(/^(.+)@(.+)(\.(.+))+$/);
}