// JavaScript Document
var Pic = new Array() 

Pic[0] = 'images/Nav_AboutOurServices_Over.gif'
Pic[1] = 'images/Nav_PastProjects_Over.gif'
Pic[2] = 'images/Nav_MakeAnInvitationToBid_Over.gif'
Pic[3] = 'images/Nav_ContactUs_Over.gif'
// =======================================
// do not edit anything below this line
// =======================================

var p = Pic.length

var preLoad = new Array()
for (i = 0; i < p; i++){
   preLoad[i] = new Image()
   preLoad[i].src = Pic[i]
}


function showAndHide(theId) 
{ 
   var el = document.getElementById(theId) 

   if (el.style.display=="none") 
   { 
      el.style.display="block"; //show element 
   } 
   else 
   { 
      el.style.display="none"; //hide element 
   } 
} 
function showAndHide(theId) 
{ 
   var el = document.getElementById(theId) 

   if (el.style.display=="none") 
   { 
      el.style.display="block"; //show element 
   } 
   else 
   { 
      el.style.display="none"; //hide element 
   } 
}