clicking = new Array();
clicking[0] = new Image(); clicking[0].src="/img/btn_renewal.gif";
clicking[1] = new Image(); clicking[1].src="/img/btn_renewal_r.gif";
clicking[2] = new Image(); clicking[2].src="/img/btn_project.gif";
clicking[3] = new Image(); clicking[3].src="/img/btn_project_r.gif";
clicking[4] = new Image(); clicking[4].src="/img/btn_product.gif";
clicking[5] = new Image(); clicking[5].src="/img/btn_product_r.gif";
clicking[6] = new Image(); clicking[6].src="/img/btn_inter.gif";
clicking[7] = new Image(); clicking[7].src="/img/btn_inter_r.gif";
clicking[8] = new Image(); clicking[8].src="/img/btn_img.gif";
clicking[9] = new Image(); clicking[9].src="/img/btn_img_r.gif";
clicking[10] = new Image(); clicking[10].src="/img/btn_data.gif";
clicking[11] = new Image(); clicking[11].src="/img/btn_data_r.gif";
clicking[12] = new Image(); clicking[12].src="/img/btn_search.gif";
clicking[13] = new Image(); clicking[13].src="/img/btn_search_r.gif";
clicking[14] = new Image(); clicking[14].src="/img/btn_guide.gif";
clicking[15] = new Image(); clicking[15].src="/img/btn_guide_r.gif";
clicking[16] = new Image(); clicking[16].src="/img/btn_words.gif";
clicking[17] = new Image(); clicking[17].src="/img/btn_words_r.gif";
clicking[18] = new Image(); clicking[18].src="/img/btn_link.gif";
clicking[19] = new Image(); clicking[19].src="/img/btn_link_r.gif";
clicking[20] = new Image(); clicking[20].src="/img/btn_gds.gif";
clicking[21] = new Image(); clicking[21].src="/img/btn_gds_r.gif";


function change(btn_num,clicking_num){
	if(document.images){
		btn_num.src=clicking[clicking_num].src;
	}
}