ns4 = (document.layers)? true:false
ie = (document.styleSheets&&document.all)? true:false
ns6 = document.getElementById&&!document.all;
opera= (document.all&& !document.styleSheets)? true:false;

//alert("NS4: " + ns4 + "nIE: " + ie + "nNS6: " + ns6 + "nOpera: " + opera);

top_position = 30;

function move_sticky() {
if (ie) document.all.stickyad.style.top=document.body.scrollTop+top_position;
if (ns6||opera) document.getElementById("stickyad").style.top=pageYOffset+top_position;
if (ns4) document.stickyad.top=pageYOffset+top_position;
setTimeout("move_sticky()",1);
}

if (! ns4) {
document.write('<div id="stickyad" style="width:100%;Position:absolute; left:0px;top=top_position"><iframe name="rech" src="http://www.studenten-wohnung.at/rechner.html" width="190" height="392" frameborder="0" border="0" margin="0" allowtransparency="true" scrolling="no"></iframe>');
}

if (ns4) {
document.write('<layer name="stickyad" top="0" left="0"><iframe name="rech" src="http://www.studenten-wohnung.at/rechner.html" width="190" height="392" frameborder="0" border="0" margin="0" allowtransparency="true" scrolling="no"></iframe>');
}

move_sticky();