String.prototype.trim = function String_trim() { return this.replace(/^ +| +$/g,''); }

function isValidInput(value) { return (value.indexOf(String.fromCharCode(160)) == -1 && value.indexOf("\\") == -1) }

function checkEmail(email) {
	return (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email));
}