home_on = new Image ( );
	home_off = new Image ( );
	home_on.src = "images/home_button_roll.jpg";
	home_off.src = "images/home_button.jpg";
	
	about_on = new Image ( );
	about_off = new Image ( );			
	about_on.src = "images/about_us_button_roll.jpg";
	about_off.src = "images/about_us_button.jpg";

	services_on = new Image ( );
	services_off = new Image ( );			
	services_on.src = "images/our_services_button_roll.jpg";
	services_off.src = "images/our_services_button.jpg";
	
	accounts_on = new Image ( );
	accounts_off = new Image ( );			
	accounts_on.src = "images/pay_acc_button_roll.jpg";
	accounts_off.src = "images/pay_acc_button.jpg";	
	
	working_on = new Image ( );
	working_off = new Image ( );			
	working_on.src = "images/work_devel_button_roll.jpg";
	working_off.src = "images/work_devel_button.jpg";	
	
	contact_on = new Image ( );
	contact_off = new Image ( );			
	contact_on.src = "images/contact_button_roll.jpg";
	contact_off.src = "images/contact_button.jpg";		
	
	function button_on ( imgName )
	{
		if ( document.images )
	  	{
	    		butOn = eval ( imgName + "_on.src" );
	    		document[imgName].src = butOn;
	  	}
	}

	function button_off ( imgName )
	{
	  	if ( document.images )
	  	{
	  	  	butOff = eval ( imgName + "_off.src" );
	  	  	document[imgName].src = butOff;
	  	}
	}