// optional preloader 
var imageHandler = { 
    path:"images/", // path to images
    imgs:[], preload:function() { for(var i=0;arguments[i];i++) {
    var img=new Image(); img.src=this.path+arguments[i]; this.imgs[this.imgs.length]=img;}}
}

imageHandler.preload("u8tool.jpg","u12tool.jpg","u16tool.jpg","seniorstool.jpg","juniorstool.jpg","u14tool.jpg","minorstool.jpg","scortool.jpg","dramatool.jpg");