(function()
{
    var s = window.location.search.substring(1).split('&');
    if(!s.length) return;
    var c = {};
    for(var i  = 0; i < s.length; i++)
    { 
        var parts = s[i].split('=');
        c[unescape(parts[0])] = unescape(parts[1]);
    }
    window.param = function(name){return name ? c[name] : c;}
}())