function preLoad(preLoad_path,preLoad_suffix,preLoad_images) {
	var preLoadArray = new Array();
	this.length = preLoad_images.length;
	for (var i = 0; i < this.length; i++) {
		var file = preLoad_path + preLoad_images[i] + preLoad_suffix + ".gif";
		preLoadArray[i] = new Image();
		preLoadArray[i].src = file;
	}
}