/* ================================================================ 
This copyright notice must be untouched at all times.

The original version of this script and the associated (x)html
is available at http://www.stunicholls/gallery/left_right_click.html
Copyright (c) 2005-2007 Stu Nicholls. All rights reserved.
This script and the associated (x)html may be modified in any 
way to fit your requirements.
=================================================================== */


clickMenu = function(gallery) 
       {
       var getImg = document.getElementById(gallery).getElementsByTagName("IMG");
       var getLi = document.getElementById(gallery).getElementsByTagName("LI");

       for (var i=0; i<getImg.length; i++) {
                     getImg[i].onclick=function() {
                     if ((this.className.indexOf('left'))!=-1) {
                            for (var x=getLi.length-1; x>0; x--) {
                                   if ((getLi[x].className.indexOf('chosen'))!=-1)       {
                                          getLi[x].className=getLi[x].className.replace("chosen", "");
                                          x--;
                                          if (x>-1) {
                                                 getLi[x].className+=" chosen";
                                                        if (x>-1 && x<getLi.length-14){
                                                        getLi[x].className=getLi[x].className.replace("hide", "");
                                                               if ((getLi[x+14].className.indexOf('hide'))==-1)
                                                               {
                                                                      getLi[x+14].className+=" hide";
                                                               }
                                                        }
                                                 }
                                          }
                                   }
                            }

                     if ((this.className.indexOf('right'))!=-1) {
                            for (var x=0; x<getLi.length-1; x++) {
                                   if ((getLi[x].className.indexOf('chosen'))!=-1)       {
                                          getLi[x].className=getLi[x].className.replace("chosen", "");
                                          x++;
                                          if (x<getLi.length) {
                                                 getLi[x].className+=" chosen";
                                                        if (x>13 && x<getLi.length) {
                                                        getLi[x].className=getLi[x].className.replace("hide", "");
                                                               if ((getLi[x-14].className.indexOf('hide'))==-1)
                                                               {
                                                                      getLi[x-14].className+=" hide";
                                                               }
                                                        }
                                                 }
                                          }
                                   }
                            }
                     }
              }


              for (var i=0; i<getLi.length; i++) {
                     getLi[i].onclick=function() {
                            for (var x=0; x<getLi.length; x++) {
                                   if ((getLi[x].className.indexOf('chosen'))!=-1)       {
                                          getLi[x].className=getLi[x].className.replace("chosen", "");
                                   }
                            }
                     this.className+=" chosen";              
                     }
              }
       }