function randadd0()
{
// Enter the number of ads per side
var left_ad_count = 6;
var right_ad_count = 2;
var tile_ad_count = 4;

//create an array of ad images
// This is for the left side
var left_array = new Array(new Image(120,60), new Image(120,60), new Image(120,60), new Image(120,60), new Image(120,60), new Image(120,60));
left_array[0].src="/images/DentaKitBannerAd_Free69_Ship_Jan08.jpg";
left_array[1].src="images/Damon1_Mar06_1yr.jpg";
left_array[2].src="images/Damon2_Mar06_1yr.jpg";
left_array[3].src="images/Damon3_Mar06_1yr.jpg";
left_array[4].src="images/Damon4_Mar06_1yr.jpg";
left_array[5].src="images/Damon5_Mar06_1yr.jpg";

// This is for the right side 
var right_array = new Array(new Image(120,60), new Image(120,60), new Image(120,60));
right_array[0].src="images/iBraces_BannerAd0906B_Jan07.jpg";
right_array[1].src="images/Oral_Breeze_Ad_March06-Number2.gif";
//right_array[2].src="images/Evertain_3_March07.jpg";

// Randomize and pick an Evertain image
//var et_spinner=Math.round(Math.random()*3)-1;
//if (et_spinner==0)
//   right_array[2].src="images/Evertain_1_March07.jpg";
//else if (et_spinner==1)
//   right_array[2].src="images/Evertain_2_March07.jpg";
//else right_array[2].src="images/Evertain_3_March07.jpg";
//else if (et_spinner==2)
//   right_array[2].src="images/Evertain_3_March07.jpg";

// This is for the tile
var tile_array = new Array(new Image(120,60), new Image(120,60), new Image(120,60), new Image(120,60));
tile_array[0].src="images/Ice1_Mar06_1yr.jpg";
tile_array[1].src="images/Ice2_Mar06_1yr.jpg";
tile_array[2].src="images/Ice3_Mar06_1yr.jpg";
tile_array[3].src="images/Ice4_Mar06_1yr.jpg";

// I use constants so it will be easy to change values if I put up new ads
 var DK="http:\/\/www.dentakit.com\/";
 var IB="http:\/\/www.ibraces.com\/";
 var AW="http:\/\/www.archwired.com\/";
 var OB="http:\/\/www.dentakit.com\/oralirrigators.html";
 var DA="http:\/\/www.damonbraces.com\/";
 var IC="http:\/\/www.iceclearbraces.com\/";
//var ET="http:\/\/www.evertain.com\/";

// Get a random number for the left side
// Uncomment this when the left side must rotate
//get a random number between 0 and the number of ads available

// first, flip a coin. if it's heads, then the left banner belongs to dentakit.
// otherwise, it goes to damon
var left_spinner=Math.round(Math.random()*2)-1;
if (left_spinner == 0)
	left_random_value = 0;
else
{
		var left_random_value=Math.round(Math.random()*left_ad_count)-1;
		while(left_random_value<1 || left_random_value>left_ad_count)
		{ 
		   left_random_value=Math.round(Math.random()*left_ad_count)-1;
		}
}

//get a random number between 0 and the number of ads available
 var right_random_value=Math.round(Math.random()*right_ad_count)-1;
 while(right_random_value<0 || right_random_value>right_ad_count)
 { 
 	right_random_value=Math.round(Math.random()*right_ad_count)-1;
 }
 
 //get a random number between 0 and the number of ads available
 // for the tiles
 var tile_random_value=Math.round(Math.random()*tile_ad_count)-1;
 while(tile_random_value<0 || tile_random_value>tile_ad_count)
 { 
 	tile_random_value=Math.round(Math.random()*tile_ad_count)-1;
 }


//change the banner ad picture
//document.link0.src=i[left_random_value].src;
document.link0.src=left_array[left_random_value].src;
document.link1.src=right_array[right_random_value].src;
document.link2.src=tile_array[tile_random_value].src;

//change the banner ad link to match the picture - left side
// Uncomment below when the left side rotates
if(left_random_value==0)
   document.links[0].href=DK;
else if(left_random_value==1)
   document.links[0].href=DA;
else if(left_random_value==2)
   document.links[0].href=DA;
else if(left_random_value==3)
   document.links[0].href=DA;
else if(left_random_value==4)
   document.links[0].href=DA;
else if(left_random_value==5)
   document.links[0].href=DA;
      
//change the banner ad link to match the picture - right side  
 if(right_random_value==0)
  document.links[1].href=IB;
 else if(right_random_value==1)
  document.links[1].href=OB;
else if(right_random_value==2)
  document.links[1].href=ET;
// else if(right_random_value==3)
//  document.links[1].href=AW;
// else if(right_random_value==4)
//  document.links[1].href=OB;

// the tile only has one link
document.links[2].href=IC;
}