//rollover.js adapted for button rollovers for the Florida Index page


NS4 = (document.layers);
IE4 = (document.all);
ver4 = (NS4 || IE4);
isMac = (navigator.appVersion.indexOf("Mac") != -1);

  // ok, we have a JavaScript browser
  var browserOK = false;
  var pics;
  if (ver4) browserOK = true;
  pics = new Array();

var objCount = 0;

function preload(name, first, second, third) {  
  if (browserOK) {     
    pics[objCount] = new Array(4);
    pics[objCount][0] = new Image();
    pics[objCount][0].src = first;
    pics[objCount][1] = new Image();
    pics[objCount][1].src = second;
	pics[objCount][2] = new Image();
    pics[objCount][2].src = third;
    pics[objCount][3] = name;
    objCount++;
  }
}

function on(name){
  if (browserOK) {
     for (i = 0; i < objCount; i++) {
      if (document.images[pics[i][3]] != null)
        if (name != pics[i][3]) { 
          // set back all other images
          document.images[pics[i][3]].src = pics[i][0].src;
        } else {
           // show the second image
           document.images[pics[i][3]].src = pics[i][1].src;
        }
    }
  }
}

function off(){
  if (browserOK) {
     for (i = 0; i < objCount; i++) {
      // set back all images
      if (document.images[pics[i][3]] != null) 
        document.images[pics[i][3]].src = pics[i][0].src;
    }
  }
}

function down(name){
  if (browserOK) {
     for (i = 0; i < objCount; i++) {
      if (document.images[pics[i][3]] != null)
        if (name != pics[i][3]) { 
          // set back all other images
          document.images[pics[i][3]].src = pics[i][0].src;
        } else {
           // show the second image
           document.images[pics[i][3]].src = pics[i][2].src;
        }
    }
  }
}

// preload images - you have to specify which images should be preloaded
// and which Image-object on the web-page they belong to (this is the first
// argument). 


preload("button-azores", "btn-azores-off.jpg", "btn-azores-ov.jpg", "btn-azores-dn.jpg");
preload("button-lisbon", "btn-lisbon-off.jpg", "btn-lisbon-ov.jpg", "btn-lisbon-dn.jpg");
preload("button-setubal", "btn-setubal-off.jpg", "btn-setubal-ov.jpg", "btn-setubal-dn.jpg");
preload("button-mountain", "btn-mountain-off.jpg", "btn-mountain-ov.jpg", "btn-mountain-dn.jpg");