Is there a way besides gifs to show images randomly (if thats the word?)I would like it to be like if you come to my startpage there will be pic a and if you come back for example 1 hours later you`ll get pic b.
  Is there a solution for this.
 
  Blue
 

http://kickme.to/ronnyb

bellow is what does what you ask,on my page.
its from macromedia so i dont know if it'll work for you or not(it include a small table)
Shadow


<table width="75%" align="center" height="82">
  <tr>
    <td height="86">
      <div align="center">
        <script language="JavaScript">
  var j,l="",m="",p="",q="",z="",list= new Array()
  list[list.length]='dvd12cr.gif';
  list[list.length]='cshq45.gif';
  list[list.length]='cdrw121032cr.jpg';
  j=parseInt(Math.random()*list.length);
  j=(isNaN(j))?0:j;
  if (list[j].indexOf('?')==-1) {
    document.write("<img src='"+list[j]+"'>");
  }
  else {
    nvp=list[j].substring(list[j].indexOf('?')+2).split('&');
    for(var i=0;i<nvp.length;i++) {
      sub=nvp.split('=');
        switch(sub[0]) {
        case 'link':
          l="<a href='"+unescape(sub[1])+"'>";
          p="</a>";
        break;
       case 'target':
          q=" target='"+unescape(sub[1])+"'";
          break;
         default:
          m+=" "+sub[0]+"='"+unescape(sub[1])+"'";
          break;
      }
    }
    z=(l!="")?((q!="")?l.substring(0,l.length-1)+q+">":l):"";
    z+="<img src='"+list[j].substring(0,list[j].indexOf('?'))+"'"+m+">"+p;
  document.write(z);
  }
</script>
      </div>
    </td>
  </tr>
</table>