if (document.images) {
   	img01on = new Image();   img01on.src = "images/menu_home_on.gif";
   	img02on = new Image();   img02on.src = "images/menu_company_on.gif"; 
   	img03on = new Image();   img03on.src = "images/menu_people_on.gif"; 
   	img04on = new Image();   img04on.src = "images/menu_wills_on.gif"; 
   	img05on = new Image();   img05on.src = "images/menu_conveyancing_on.gif"; 
   	img06on = new Image();   img06on.src = "images/menu_commercial_on.gif"; 
	img07on = new Image();   img07on.src = "images/menu_contact_on.gif"; 

  
	 
  
   	img01off = new Image();   img01off.src = "images/menu_home.gif";
   	img02off = new Image();   img02off.src = "images/menu_company.gif"; 
   	img03off = new Image();   img03off.src = "images/menu_people.gif"; 
   	img04off = new Image();   img04off.src = "images/menu_wills.gif";
   	img05off = new Image();   img05off.src = "images/menu_conveyancing.gif"; 
   	img06off = new Image();   img06off.src = "images/menu_commercial.gif"; 
   	img07off = new Image();   img07off.src = "images/menu_contact.gif"; 
 
}

function imgOn(imgName)
{
   if (document.images) {
      document[imgName].src = eval(imgName + "on.src");
   }
}

function imgOff(imgName)
{
   if (document.images) {
      document[imgName].src = eval(imgName + "off.src");
   }
}