if (document.images) {
 img1on = new Image(); 
 img1on.src = "images/home_btn_over.jpg";   
 img1off = new Image(); 
 img1off.src = "images/home_btn.jpg"; 
  
 img2on = new Image(); 
 img2on.src = "images/mission_btn_over.jpg";   
 img2off = new Image(); 
 img2off.src = "images/mission_btn.jpg"; 
  
 img3on = new Image(); 
 img3on.src = "images/directions_btn_over.jpg";                                                                                                                                                                                                                                    
 img3off = new Image(); 
 img3off.src = "images/directions_btn.jpg"; 
  
 img4on = new Image(); 
 img4on.src = "images/gift_btn_over.jpg";   
 img4off = new Image(); 
 img4off.src = "images/gift_btn.jpg"; 
  
 img5on = new Image(); 
 img5on.src = "images/calendar_btn_over.jpg"  
 img5off = new Image(); 
 img5off.src = "images/calendar_btn.jpg" 
 
 img6on = new Image(); 
 img6on.src = "images/pressreleases_btn_over.jpg"  
 img6off = new Image(); 
 img6off.src = "images/pressreleases_btn.jpg" 
 
 img7on = new Image(); 
 img7on.src = "images/partners_btn_over.jpg"  
 img7off = new Image(); 
 img7off.src = "images/partners_btn.jpg" 
 
 img8on = new Image(); 
 img8on.src = "images/button_uv3_standard_over.jpg"  
 img8off = new Image(); 
 img8off.src = "images/button_uv3_standard.jpg" 
  
 img9on = new Image(); 
 img9on.src = "images/specials_btn_over.gif"  
 img9off = new Image(); 
 img9off.src = "images/specials_btn.gif" 
   
 img10on = new Image(); 
 img10on.src = "images/contact_btn_over.jpg"  
 img10off = new Image(); 
 img10off.src = "images/contact_btn.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"; 

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

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