var cDiv = document.getElementById("kostenlosejavascripts");
var cD1 = (cDiv.innerText) ? cDiv.innerText : cDiv.textContent;
var cD2 = cDiv.innerHTML;

if (cD1.length > 5) {window.onload=fillup; } 
else {
    document.write("<a href='http://www.tipp-international.de/'></a>");
}