//プリロード
	var img = new Array();
	img[10] = new Image(); img[10].src = "./img/btn_sitemap_ov.jpg";

		//TOP2段目
	img[20] = new Image(); img[20].src = "./img/menu_zit_ov.jpg";
	img[30] = new Image(); img[30].src = "./img/menu_voice_ov.jpg";
	img[40] = new Image(); img[40].src = "./img/menu_com_ov.jpg";
	img[50] = new Image(); img[50].src = "./img/menu_annai_ov.jpg";

		//TOP3段目
	img[60] = new Image(); img[60].src = "./img/what_ov.jpg";
	img[70] = new Image(); img[70].src = "./img/repo_ov.jpg";

	img[80] = new Image(); img[80].src = "./img/more_ov.jpg";

	img[90] = new Image(); img[90].src = "./img/bana_navi_ov.jpg";
	img[100] = new Image(); img[100].src = "./img/bana_web_ov.jpg";
	img[110] = new Image(); img[110].src = "./img/bana_server_ov.jpg";
	img[120] = new Image(); img[120].src = "./img/bana_gyomu_ov.jpg";
	img[130] = new Image(); img[130].src = "./img/naba_repo_ov.jpg";
	img[140] = new Image(); img[140].src = "./img/pro_btn_ov.jpg";
	img[150] = new Image(); img[150].src = "./img/pro_btn_ov.jpg";
	img[160] = new Image(); img[160].src = "./img/bana_lesamis_ov.jpg";
	img[180] = new Image(); img[180].src = "./img/bana_sin_ov.jpg";

	img[170] = new Image(); img[170].src = "./img/zit_recruiting_ov.jpg";



	img[11] = new Image(); img[11].src = "./img/btn_sitemap_on.jpg";

		//TOP2段目
	img[21] = new Image(); img[21].src = "./img/menu_zit_on.jpg";
	img[31] = new Image(); img[31].src = "./img/menu_voice_on.jpg";
	img[41] = new Image(); img[41].src = "./img/menu_com_on.jpg";
	img[51] = new Image(); img[51].src = "./img/menu_annai_on.jpg";

		//TOP3段目
	img[61] = new Image(); img[61].src = "./img/what_on.jpg";
	img[71] = new Image(); img[71].src = "./img/repo_on.jpg";

	img[81] = new Image(); img[81].src = "./img/more_on.jpg";

	img[91] = new Image(); img[91].src = "./img/bana_navi_on.jpg";
	img[101] = new Image(); img[101].src = "./img/bana_web_on.jpg";
	img[111] = new Image(); img[111].src = "./img/bana_server_on.jpg";
	img[121] = new Image(); img[121].src = "./img/bana_gyomu_on.jpg";
	img[131] = new Image(); img[131].src = "./img/naba_repo_on.jpg";
	img[141] = new Image(); img[141].src = "./img/pro_btn_on.jpg";
	img[151] = new Image(); img[151].src = "./img/pro_btn_on.jpg";
	img[161] = new Image(); img[161].src = "./img/bana_lesamis_on.jpg";
	img[181] = new Image(); img[181].src = "./img/bana_sin_on.jpg";

	img[171] = new Image(); img[171].src = "./img/zit_recruiting_on.jpg";


	function _in(nam,num){
		document.images[nam].src = img[num].src;
	}
	
	function _out(nam,num){
		document.images[nam].src = img[num].src;
	}