function checkMail()
{
    try 
    {
        var strVars = window.location.search;
        strVars = strVars.replace("?","");
        var splitVars = new Array();
        var vars = new Array();
        splitVars = strVars.split("&");

        for(i=0;i<splitVars.length;i++)
        {
            var tmp = splitVars[i].split("=");
            var nname = tmp[0];
            vars[nname] = tmp[1];
        }
        if (vars["email"] != undefined)
            document.getElementById('email').value = unescape(vars["email"]);
    } catch (e) {};
}