var togglePhone = 1;
var toggleEmail = 1;
var toggleLocation = 1;

window.onload = initForJS;

function initForJS() {
  togglePhone = 0;
  toggleEmail = 0;
  toggleLoaction = 0;
  document.getElementById("contact_email").src="images/contact_email.gif";
  document.getElementById("contact_phone").src="images/contact_phone.gif";
  document.getElementById("contact_location").src="images/contact_location.gif";
}

function swapContact(image) {
  switch (image.id) {
    case "contact_phone": 
      if (togglePhone == 0) {
        image.src= "images/contact_phone_detail.gif";
        ++togglePhone;
      } else {
        image.src= "images/contact_phone.gif"
        --togglePhone;
      }
      
      document.getElementById("contact_email").src="images/contact_email.gif";
      toggleEmail = 0;
      document.getElementById("contact_location").src="images/contact_location.gif";            
      toggleLocation = 0;
      break;
    
    case "contact_email": 
      if (toggleEmail == 0) {
        image.src= "images/contact_email_detail.gif";
        ++toggleEmail;
      } else {
        image.src= "images/contact_email.gif"
        --toggleEmail;
      }
      
      document.getElementById("contact_phone").src="images/contact_phone.gif";
      togglePhone = 0;
      document.getElementById("contact_location").src="images/contact_location.gif";
      toggleLocation = 0;
      break;
    
    case "contact_location": 
      if (toggleLocation == 0) {
        image.src= "images/contact_location_detail.gif";
        ++toggleLocation;
      } else {
        image.src= "images/contact_location.gif"
        --toggleLocation;
      }
      
      document.getElementById("contact_phone").src="images/contact_phone.gif";
      togglePhone = 0;
      document.getElementById("contact_email").src="images/contact_email.gif";
      toggleEmail = 0;
      break;
  }
}