function mytopadchoose() {
 if(Math.random()>0.6) {
  mytopadimg.src="http://astana.en.cx/images/personal/8765/igrekban.gif";
  mytopada.href="http://igrek.kz/";
 }
 else {
  mytopadimg.src="http://astana.en.cx/images/personal/8765/fenixastana.gif";
  mytopada.href="http://astana.en.cx/Addons.aspx?aid=2164";
 }
}

function mytoggle(id) {
 obj = document.getElementById(id);
 obj.style.display = obj.style.display=="none" ? "block" : "none";
}

var myrndimgindex=0;
function myChangeRndImage(myrndimgcount, myrndimgpath, myrndimgext, myrndimgid) {
 var mynewrndimgindex = myrndimgindex;
 while(myrndimgindex==mynewrndimgindex) {
  mynewrndimgindex=Math.round(1 + Math.random() * (myrndimgcount - 1));
 }
 myrndimgindex = mynewrndimgindex;
 document.getElementById(myrndimgid + "A").href = document.getElementById(myrndimgid).src = myrndimgpath + myrndimgindex + "." + myrndimgext;

}