img1a = new Image; 
img1b = new Image;
img1a.src = "images/nav/home.gif"; 
img1b.src = "images/nav/home_over.gif";
img2a = new Image; 
img2b = new Image;
img2a.src = "images/nav/company.gif"; 
img2b.src = "images/nav/company_over.gif";
img3a = new Image; 
img3b = new Image;
img3a.src = "images/nav/staff.gif"; 
img3b.src = "images/nav/staff_over.gif";
img4a = new Image; 
img4b = new Image;
img4a.src = "images/nav/services.gif"; 
img4b.src = "images/nav/services_over.gif";
img5a = new Image; 
img5b = new Image;
img5a.src = "images/nav/toolkit.gif"; 
img5b.src = "images/nav/toolkit_over.gif";
img6a = new Image; 
img6b = new Image;
img6a.src = "images/nav/contact.gif"; 
img6b.src = "images/nav/contact_over.gif";
img7a = new Image; 
img7b = new Image;
img7a.src = "images/nav/directions.gif"; 
img7b.src = "images/nav/directions_over.gif";


function changeContent(pic) {
   if (document.getElementById || document.all) {
      var el = document.getElementById? document.getElementById("pics"): document.all["pics"];

      if (el && typeof el.innerHTML != "undefined") {
      
      	 el.innerHTML = "<table border=0 cellpadding=0 cellspacing=0><tr><td><a href='#' onclick=changeContent('kill')><img src='" + pic + "' border=1 title='click image to close' style='border-color=#61323E' alt='click to close'></a></td><td rowspan=2 background='images/dot_bg1.gif'><img src='images/spacer.gif' width=8 height=8></td></tr><tr><td background='images/dot_bg2.gif'><img src='images/spacer.gif' width=8 height=8></td></tr><tr><td colspan=2><br><font color=000000>(click image to close)</td></tr></table>";
      	 
      }
      
      if (pic == "kill") el.innerHTML = "";      
   }
}


function popup() {

window.open("popup.html","popup","width=460,height=500,scrollbars=1");

}