function a() {
    // main
    document.write('<'+'script type="text/javascript" src="http://ad.adfox.cz/ppcbe?js=1&amp;charset=utf&amp;format=504f7fffffff3366ff00000033996671&amp;partner=3106&amp;stranka='+location.href+'"><'+'/script>');
}
function b() {
    // under
    document.write('<'+'iframe width="468" height="60" frameborder="0" style="width:468px;height:60px;border:none" scrolling="no" src="http://ad.adfox.cz/ppcbe?js=0&amp;charset=utf&amp;format=666699ffffff3366ff00000033996675&amp;partner=3106&amp;kanaly=524522&amp;stranka='+location.href+'"><'+'/iframe>');    
}
function c() {
    // right
     document.write('<'+'script type="text/javascript" charset="utf-8" src="http://cz.static.etargetnet.com/generic/advert.php?g=ref:14943,area:200x450,tabl:1,n:2,js:1,target:_new,border_color:ffffff,background_color:ffffff,title_color:0066d5,title_underline:1,text_color:000000,fsi:12,font:arial" ></script>');
}