 <!--//
        if (document.images) {
	        img1on = new Image();           // Active images
	        img1on.src = "/images/btn_appointmentOver.gif";  
            img2on = new Image();           
	        img2on.src = "/images/btn_submitFormOver.gif";  
		    
	    
	        img1off = new Image();          // Inactive images
	        img1off.src = "/images/btn_appointment.gif"; 
            img2off = new Image();          
	        img2off.src = "/images/btn_submitForm.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");        
                    }
            }
        //-->