/// <reference path="jquery-1.4.2-vsdoc.js" />
function IsEmail(mail)
{
    if (mail.length > 0)
        return (new RegExp(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/).test(mail));
    else
        return true;
}
function QueryString(item) {
    var sValue = location.search.match(new RegExp("[\?\&]" + item + "=([^\&]*)(\&?)", "i"))
    return sValue ? sValue[1] : sValue
}