function trim(str) {
	return ltrim(rtrim(str, ' '), ' ');
}

function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

function validateEmail(email)
{
	var emailRegxp = /^([\w]+)(.[\w]+)*@([\w]+)(.[\w]{2,3}){1,2}$/;
	if(!emailRegxp.test(email))
	{		
		return false;
	}
	else
	{
		return true;
	}
}