var ad1;
var ad2;
var ad3;
var addstep;


function load() {
      if (GBrowserIsCompatible()) {
        
        ad1=new Image();
        ad1.src="ad1.JPG";
	 ad2=new Image();
        ad2.src="ad2.JPG";
        ad3=new Image();
        ad3.src="ad3.JPG";
     
	
	adstep=2;

       
        document.getElementById('ad').innerHTML= html = '<br><img src=' + "ad1.JPG" + ' name=adslide><br>';
    
   
             setTimeout("addSlide()",1500);
    }
    }

function addSlide()
{
	if(!document.images)
        return;
        
      document.images.adslide.src=eval("ad"+adstep+".src");
      
      if(adstep==2)
      {
        adstep=1;
      }
      else
      {
        adstep+=1;
     
      }
      setTimeout("addSlide()",1500);

}