function toggleMenu(objID) {
if (!document.getElementById) return;
var ob = document.getElementById(objID).style;
ob.display = (ob.display == 'block')?'none': 'block';
}

function openMenu(objID) {
if (!document.getElementById) return;
var ob = document.getElementById(objID).style;
ob.display = 'block';
}

var light=1;
function flip() {

 
  if (light==1)
    {document.image.src="images/image2.jpg"; light=2}
  else
    {document.image.src="images/image1.jpg"; light=1}
    
    

} 
  
var light2=1;
  
function flip2() {

 
  if (light2==1)
    {document.image2.src="images/image2.jpg"; light2=2}
  else
    {document.image2.src="images/image1.jpg"; light2=1}

} 

var light3=1;
  
function flip3() {

 
  if (light3==1)
    {document.image3.src="images/image2.jpg"; light3=2}
  else
    {document.image3.src="images/image1.jpg"; light3=1}

}