/**
      * Funktion isCookie
      * prüft ob cookies erlaubt sind
      * Parameter: nix
      * Rückgabewert: true/false
      **/
      
function isCookie()
{
    if(typeof navigator.cookieEnabled!='undefined')
        {
            return navigator.cookieEnabled;
        }
    
    setCookie('testcookie','testwert',1);
    
    if(!document.cookie)
        {
            return false;
        }
    
    deleteCookie('testcookie');
    return true;        
}


    /**
      * Funktion:deleteCookie()
      * Löscht cookie
      * Parameter: cookie-Name
      * Rückgabewert: true/false
      **/
 
function deleteCookie(cookieName)
{
    if(document.cookie)
        {
            document.cookie = cookieName + '=' +
                              getCookie(cookieName) +
                              ';expires=Thu, 01-Jan-1970 00:00:01 GMT;'; 
            return true;
        }
    return false;
}


     /**
      * holt cookie-Wert
      * Parameter:cookie-Name
      * Rückgabewert: cookie-Wert/ false
      **/
      
function getCookie(cookieName)
{
    strValue = false;       
    if( strCookie = document.cookie )
        {
            if( arrCookie = strCookie.match( new RegExp( cookieName + '=([^;]*)', 'g')))
                {
                    strValue=RegExp.$1;
                }
        }
    return(strValue);    
}

/**
      * Funktion:setcookie()
      * setzt cookie
      * Parameter: cookie-Name,cookie-Wert,Haltbarkeit in Tagen
      * Rückgabewert: true/false
      **/
      
function setCookie(cookieName,cookieValue,intDays)
{
     	if(!isCookie())
        {
            return false;
        }
        
    objNow = new Date();
    strExp = new Date( objNow.getTime() + ( intDays * 86400000) );
    document.cookie = cookieName + '=' + 
                      cookieValue + ';expires=' + 
                      strExp.toGMTString() + ';';
    return true;
}

function checkCookie(cookieName) {        
                        wert = getCookie(cookieName); 
			   if (wert=="1") {	
				return false;		                                                    
			   } 
                               else {			      
                                      lightbox4ward169();
                                      setCookie(cookieName,'1','2592000');
			              }
			}