if (document.images) {
 img1on = new Image(); 
 img1on.src = "images/btn_home_over.gif";   
 img1off = new Image(); 
 img1off.src = "images/btn_home.gif"; 
  
 img2on = new Image(); 
 img2on.src = "images/btn_mission_over.gif";   
 img2off = new Image(); 
 img2off.src = "images/btn_mission.gif"; 
  
 img3on = new Image(); 
 img3on.src = "images/btn_directions_over.gif";                                                                                                                                                                                                                                    
 img3off = new Image(); 
 img3off.src = "images/btn_directions.gif"; 
  
 img4on = new Image(); 
 img4on.src = "images/btn_gcertificates_over.gif";   
 img4off = new Image(); 
 img4off.src = "images/btn_gcertificates.gif"; 
  
 img5on = new Image(); 
 img5on.src = "images/btn_calendar_over.gif"  
 img5off = new Image(); 
 img5off.src = "images/btn_calendar.gif" 
 
 img6on = new Image(); 
 img6on.src = "images/btn_partners_over.gif"  
 img6off = new Image(); 
 img6off.src = "images/btn_partners.gif" 
 
 img7on = new Image(); 
 img7on.src = "images/btn_flagship_over.gif"  
 img7off = new Image(); 
 img7off.src = "images/btn_flagship.gif" 
   
 img8on = new Image(); 
 img8on.src = "images/btn_contact_over.gif"  
 img8off = new Image(); 
 img8off.src = "images/btn_contact.gif" 
    
 img9on = new Image(); 
 img9on.src = "images/btn_specialevent_over.jpg"  
 img9off = new Image(); 
 img9off.src = "images/btn_specialevent.jpg" 
 }
 
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");
 }
}

 
var msgString = "email address"; 

function ClearField(field) { 
     if (field.value == msgString) { field.value = ""; } 
} 

function ResetField(field) { 
     if (field.value == "") { field.value = msgString; } 
}