function generirajGUID(koristiRazmak)
{
    var result, i, j;
    result = '';
    var separator = '-';
    if (!koristiRazmak)
        separator ='';
        
    for(j=0; j<32; j++)
    {
        if( j == 8 || j == 12|| j == 16|| j == 20)
            result = result + separator;
        i = Math.floor(Math.random()*16).toString(16).toUpperCase();
        result = result + i;
    }
    
    return result;
} 
/* Client-side access to querystring name=value pairs
Version 1.3
28 May 2008
License (Simplified BSD):
http://adamv.com/dev/javascript/qslicense.txt
*/
function Querystring(qs) { // optionally pass a querystring to parse
    this.params = {};
    if (qs == null) qs = location.search.substring(1, location.search.length);
    if (qs.length == 0) return;
    // Turn <plus> back to <space>
    // See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
    qs = qs.replace(/\+/g, ' ');
    var args = qs.split('&'); // parse out name/value pairs separated via &
    // split out each name=value pair
    for (var i = 0; i < args.length; i++) {
        var pair = args[i].split('=');
        var name = decodeURIComponent(pair[0]);
        var value = (pair.length == 2)
			? decodeURIComponent(pair[1])
			: name;
        this.params[name] = value;
    }
}
Querystring.prototype.get = function(key, default_) {
    var value = this.params[key];
    return (value != null) ? value : default_;
}
Querystring.prototype.contains = function(key) {
    var value = this.params[key];
    return (value != null);
}