function getUserId()  {
    var name = "BlogoserwisOcenyUser";
    var nameEQ = name + "=";   
    var caBefore = document.cookie.split(';');
    createCookie("BlogoserwisCheckCookie","true",1);    
    var ca = document.cookie.split(';');
    if (ca.length == caBefore.length){
		eraseCookie("BlogoserwisCheckCookie");
    	return "-1";
    }    
   	eraseCookie("BlogoserwisCheckCookie");
   	
   	ca = document.cookie.split(';');
    for(var i=0;i < ca.length;i++) {
        var c = ca[i];        
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
            if (c.indexOf(nameEQ) == 0)  {
            	return unescape(c.substring(nameEQ.length,c.length));
            }
    }
    return null;
}
function eraseCookie(name) {
	createCookie(name,"",-1);
}
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}