pic_width_banner=728;   /*change to match the height of all your images */
pic_height_banner=90;   /* change to match the width of all your images */

pic_width_tower=160;   /*change to match the height of all your images */
pic_height_tower=600;   /* change to match the width of all your images */

border_size=0;   /* change to the border size you want on the images */
alignment=0;      /* 0=left,1=center */

/* define image urls */

if (document.images)
 {
	/* Tower Ad URLs */
	/*Change the URLs below to link the TOWER ads to another website or other file. */
	pic1= new Image(pic_width_tower,pic_height_tower);
	pic1.src="tower/heritagecenterwinkbutton.jpg"; 
	pic2= new Image(pic_width_tower,pic_height_tower);
	pic2.src="tower/grimaldi.jpg";
	
	/* Tower Ad URLs */
	/*Change the URLs below to link the TOWER ads to another website or other file. */
	pic3= new Image(pic_width_tower,pic_height_tower);
	pic3.src="tower/heritagecenterwinkbutton.jpg"; 
	pic4= new Image(pic_width_tower,pic_height_tower);
	pic4.src="tower/grimaldi.jpg";

 }    

/* Define Tower URLs Top*/
urlad1="http://www.lcca.com";
urlad2="http://www.understandspinesurgery.com/grimaldi";

/* Define Tower URLs Bottom*/
urlad3="http://www.lcca.com";
urlad4="http://www.understandspinesurgery.com/grimaldi";



if (alignment==1)
 {
  cent_it="<center>";
  cent_it2="</center>";
 }
else
 {
  cent_it="";
  cent_it2="";
 }
 
function get_random(maxNum)
{
  if (Math.random && Math.round)
  {
    var ranNum= Math.round(Math.random()*(maxNum-1));
    ranNum+=1;
    return ranNum;
  }
  else
  {
  today= new Date();
  hours= today.getHours();
  mins=   today.getMinutes();
  secn=  today.getSeconds();
  if (hours==19)
   hours=18;
  var ranNum= (((hours+1)*(mins+1)*secn)%maxNum)+1;
  return ranNum; 
  }
}

/* Function: get_Image_Tower */
/* This function is used to return a banner ad and write the HTML code to show it on the page */
function get_Image_Tower_Top()
{
 if (document.images)
 {
  var choose_one= get_random(2);  
  choose_one--;

  var pics= new Array(2) 
   	pics[0]=pic1.src;
   	pics[1]=pic2.src;

  var aurl= new Array(2)
  	aurl[0]=urlad1;
  	aurl[1]=urlad2;

  document.write(cent_it+"<A HREF='"+aurl[choose_one]+"'><IMG SRC='"+pics[choose_one]+"' width='"+pic_width_tower+"' height='"+pic_height_tower+"' border='"+border_size+"'></A>"+cent_it2);
 }
}

/* Function: get_Image_Tower */
/* This function is used to return a banner ad and write the HTML code to show it on the page */
function get_Image_Tower_Bottom()
{
 if (document.images)
 {
  var choose_one= get_random(2);  
  choose_one--;

  var pics= new Array(2) 
   	pics[0]=pic3.src;
   	pics[1]=pic4.src;

  var aurl= new Array(2)
  	aurl[0]=urlad3;
  	aurl[1]=urlad4;

  document.write(cent_it+"<A HREF='"+aurl[choose_one]+"'><IMG SRC='"+pics[choose_one]+"' width='"+pic_width_tower+"' height='"+pic_height_tower+"' border='"+border_size+"'></A>"+cent_it2);
 }
}