// ******************************************************

// Script from Stefan Koch - Voodoo's Intro to JavaScript

//           Modified by Phil Barlow 25.02.98

//     http://rummelplatz.uni-mannheim.de/~skoch/js/ 

//       JS-book: http://www.dpunkt.de/javascript

// ******************************************************



pics = new Array();

var objCount = 0;



function preload(name, first, second) {  

  if (document.images) {     

    pics[objCount] = new Array(3);

    pics[objCount][0] = new Image();

    pics[objCount][0].src = first;

    pics[objCount][1] = new Image();

    pics[objCount][1].src = second;

    pics[objCount][2] = name;

    objCount++;

  }

}



function on(name){

  if (document.images) {

     for (i = 0; i < objCount; i++) {

      if (document.images[pics[i][2]] != null)

        if (name != pics[i][2]) { 

          document.images[pics[i][2]].src = pics[i][0].src;

        } else {

          document.images[pics[i][2]].src = pics[i][1].src;

        }

    }

  }

}



function off(){

  if (document.images) {

     for (i = 0; i < objCount; i++) {

      if (document.images[pics[i][2]] != null) 

        document.images[pics[i][2]].src = pics[i][0].src;

    }

  }

}



// preload images



//main nav bar images 

preload("home", "images/nav/home1.gif", "images/nav/home2.gif");

preload("thecentre", "images/nav/thecentre1.gif", "images/nav/thecentre2.gif");

preload("drystonewalling", "images/nav/drystonewalling1.gif", "images/nav/drystonewalling2.gif");

preload("walks", "images/nav/walks1.gif", "images/nav/walks2.gif");

preload("enquiries", "images/nav/enquiries1.gif", "images/nav/enquiries2.gif");

preload("reviewsquotes", "images/nav/reviewsquotes1.gif", "images/nav/reviewsquotes2.gif");