var mikExp = /[0123456789()-]/;
function checkInt(val){
	var strPass = val.value;
	var strLength = strPass.length;
	var lchar = val.value.charAt((strLength) - 1);
	
	if(lchar.search(mikExp) == -1) {
		var tst = val.value.substring(0, (strLength) - 1);
		val.value = tst;
   	}	
}

function checkLogin(field) {
	var goodLogin = field.value.match(/\s{1}/gi);
	if (goodLogin) { return false; } else { return true; }
}

function checkPassword(field1, field2) {
	if (field1.value == field2.value) { return true; } else { return false; }
}

function checkEmail(field) {
	var goodEmail = field.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi);
	if (goodEmail || field.value == "") { return true; } else { return false; }
}