function preLoad() {
                ;
        }
        function changeImage(filename,imageName) {
                        ;
        }


        var imageDir = "../btn/";
        var loadList;
        var action = "off";

        function preLoad() {
                loadList = new Array("btn01.gif","btn02.gif","btn03.gif","btn04.gif","btn05.gif","btn06.gif","btn07.gif","btn08.gif","btn09.gif","btn10.gif","btn11.gif","btn12.gif","btn13.gif","btn14.gif","btn15.gif","btn16.gif","btn17.gif","btn18.gif","btn19.gif","btn20.gif","btn21.gif","btn22.gif","btn23.gif","btn24.gif","btn25.gif","btn26.gif","btn27.gif","btn28.gif","btn29.gif","btn30.gif","btn31.gif","btn32.gif","btn01_on.gif","btn02_on.gif","btn03_on.gif","btn04_on.gif","btn05_on.gif","btn06_on.gif","btn07_on.gif","btn08_on.gif","btn09_on.gif","btn10_on.gif","btn11_on.gif","btn12_on.gif","btn13_on.gif","btn14_on.gif","btn15_on.gif","btn16_on.gif","btn17_on.gif","btn18_on.gif","btn19_on.gif","btn20_on.gif","btn21_on.gif","btn22_on.gif","btn23_on.gif","btn24_on.gif","btn25_on.gif","btn26_on.gif","btn27_on.gif","btn28_on.gif","btn29_on.gif","btn30_on.gif","btn31_on.gif","btn32_on.gif","t00.gif","t01.gif","t02.gif","t03.gif","t04.gif","t05.gif","t06.gif"
                );
                onImages = new Array();
                for (field in loadList)
                {
                        onImages[field] = new Image();
                        onImages[field].src = imageDir + loadList[field];
                }
                action = "on";
        }

        function changeImage(fileName,imageName)
        {
                if(action == "on"){
                        document.images[imageName].src =  imageDir + fileName;
                }
        }