services_on = new Image ( );
		services_off = new Image ( );
		
		services_on.src = "images/services_over.gif";
		services_off.src = "images/services.gif";
		
		capabilities_on = new Image ( );
		capabilities_off = new Image ( );
		
		capabilities_on.src = "images/capabilities_over.gif";
		capabilities_off.src = "images/capabilities.gif";
		
		offices_on = new Image ( );
		offices_off = new Image ( );
		
		offices_on.src = "images/offices_over.gif";
		offices_off.src = "images/offices.gif";
		
		services_btm_on = new Image ( );
		services_btm_off = new Image ( );
		
		services_btm_on.src = "images/services_btm_over.gif";
		services_btm_off.src = "images/services_btm.gif";
		
		capabilities_btm_on = new Image ( );
		capabilities_btm_off = new Image ( );
		
		capabilities_btm_on.src = "images/capabilities_btm_over.gif";
		capabilities_btm_off.src = "images/capabilities_btm.gif";
		
		offices_btm_on = new Image ( );
		offices_btm_off = new Image ( );
		
		offices_btm_on.src = "images/offices_btm_over.gif";
		offices_btm_off.src = "images/offices_btm.gif";
		
		careers_btm_on = new Image ( );
		careers_btm_off = new Image ( );
		
		careers_btm_on.src = "images/careers_btm_over.gif";
		careers_btm_off.src = "images/careers_btm.gif";
		
		other_services_btm_on = new Image ( );
		other_services_btm_off = new Image ( );
		
		other_services_btm_on.src = "images/other_services_btm_over.gif";
		other_services_btm_off.src = "images/other_services_btm.gif";
		
		contact_us_btm_on = new Image ( );
		contact_us_btm_off = new Image ( );
		
		contact_us_btm_on.src = "images/contact_us_btm_over.gif";
		contact_us_btm_off.src = "images/contact_us_btm.gif";
		
		
		function button_on ( imgId )
		{
		  if ( document.images )
		  {
		    butOn = eval ( imgId + "_on.src" );
		    document.getElementById(imgId).src = butOn;
		  }
		}

		function button_off ( imgId )
		{
		  if ( document.images )
		  {
		    butOff = eval ( imgId + "_off.src" );
		    document.getElementById(imgId).src = butOff;
		  }
		}