pic_a = new Array();
pic_p = new Array();

function load_but(name,src_dir,psrc,asrc) {
		
	pic_a[name] = new Image;
	pic_a[name].src = src_dir+asrc;
	
	pic_p[name] = new Image;
	pic_p[name].src = src_dir+psrc;
}

function change_but(name,script) {
	
	if (script=='on') {
		document.images[name].src = pic_a[name].src;
	}
	
	if (script=='out') {
		document.images[name].src = pic_p[name].src;
	}

}