picsa_dir		= "/images/";
picsa_btn		= "btn_";
picsa_csr		= "csr_";
picsa_name		= new Array();
picsa_name[0]	= "news.gif";
picsa_name[1]	= "service.gif";
picsa_name[2]	= "product.gif";
picsa_name[3]	= "column.gif";
picsa_name[4]	= "outline.gif";
picsa_name[5]	= "contact.gif";

picsa1 = new Array();
picsa2 = new Array();
for(k = 0; k < picsa_name.length; k++){
	picsa1[k] = new Image();
	picsa1[k].src = picsa_dir+picsa_btn+picsa_name[k];
	picsa2[k] = new Image();
	picsa2[k].src = picsa_dir+picsa_csr+picsa_name[k];
}

function mouse_insa(dottisa)
{
	document.images["linksa"+dottisa].src = picsa2[dottisa].src;
}

function mouse_outsa(dottisa){
	document.images["linksa"+dottisa].src = picsa1[dottisa].src;
}

function comment(bunn){
	status=bunn;
}

/************************************************************/

menulist			= new Array();
menulist_link		= new Array();
menulist_src		= new Array();

	//値の初期化
menulist[0]			= new Array();
menulist_link[0]	= new Array();
menulist_src[0]		= new Array();
menulist[0][0]		= "ニュースリリース";
menulist_link[0][0]	= "news_release.php";
//menulist_src[0][0]	= "/images/btn_news.gif";

menulist[1]			= new Array();
menulist_link[1]	= new Array();
menulist_src[1]		= new Array();
menulist[1][0]		= "MDC提供サービス";
menulist_link[1][0]	= "service.php";
//menulist_src[1][0]	= "/images/btn_service.gif";

menulist[1][1]		= "納入実績";
menulist_link[1][1]	= "client.php";
//menulist_src[1][1]	= "";

menulist[1][2]		= "納入事例";
menulist_link[1][2]	= "job_index.php";
//menulist_src[1][2]	= "";

menulist[2]			= new Array();
menulist_link[2]	= new Array();
menulist_src[2]		= new Array();
menulist[2][0]		= "";
menulist_link[2][0]	= "prdct_index.php";
//menulist_src[2][0]	= "/images/btn_temp.gif";

menulist[3]			= new Array();
menulist_link[3]	= new Array();
menulist_src[3]		= new Array();
menulist[3][0]		= "コラム";
menulist_link[3][0]	= "column/";
//menulist_src[3][0]	= "/images/btn_column.gif";

menulist[4]			= new Array();
menulist_link[4]	= new Array();
menulist_src[4]		= new Array();
menulist[4][0]		= "会社情報";
menulist_link[4][0]	= "outline.php";
//menulist_src[4][0]	= "/images/btn_about_mdc.gif";

menulist[4][1]		= "企業理念";
menulist_link[4][1]	= "vision.php";
//menulist_src[4][1]	= "";

//menulist[4][2]		= "情報セキュリティ基本方針";
menulist[4][2]		= "情報セキュリティ";
menulist_link[4][2]	= "security.php";
//menulist_src[4][2]	= "";

menulist[4][3]		= "事業内容";
menulist_link[4][3]	= "business.php";
//menulist_src[4][3]	= "";

menulist[4][4]		= "アクセス";
menulist_link[4][4]	= "access.php";
//menulist_src[4][4]	= "";

menulist[4][5]		= "採用情報";
menulist_link[4][5]	= "recruit.php";
//menulist_src[4][5]	= "";

menulist[5]			= new Array();
menulist_link[5]	= new Array();
menulist_src[5]		= new Array();
menulist[5][0]		= "お問い合わせ";
menulist_link[5][0]	= "regform.php";
//menulist_src[5][0]	= "/images/btn_contact.gif";

var sub_option = 9999;	//親カテゴリ選択状態初期化
var win_Width = 0;

function mainmenu(mode)
{
	//メニュー出力
	ddata = '';
	ddata += '<ul>\n';
	for(i = 0; i < menulist.length; i++){
		//親カテゴリ
		ddata += '<li><a href="'+menulist_link[i][0]+'" title="'+menulist[i][0]+' " OnMouseOver="submenu('+i+', '+mode+'); mouse_insa('+i+');" onMouseOut="mouse_outsa('+i+');"><img src="'+picsa1[i].src+'" alt="'+menulist[i][0]+'" width="124" height="30" name="linksa'+i+'" /></a></li>';
	}
	ddata += '</ul>\n';
	document.getElementById("menubutton").innerHTML = ddata;
}

function submenu(option, mode){
	//画面サイズを取得する
	if(document.all){
		//IE
		nWidth = document.body.clientWidth - 18; // -0
		if(mode != 1){
			p_top = 163;
		}
		else{
			p_top = 497;
		}
	}
	else{
		//NN
		nWidth = window.innerWidth - 19; // -20
		if(mode != 1){
			p_top = 163; // 165
		}
		else{
			p_top = 497;
		}
	}
	win_Width = (nWidth - 751) / 2; // -760
	if(win_Width <= 0){
		win_Width = 0;
	}

	//レイヤーデータ生成
	layer_data = '';
	for(i = 0; i < menulist.length; i++){
		p_left = win_Width + (125 * i);
		layer_data += '<div id="layermenu'+i+'" style="position:absolute; left:'+p_left+'px; top:'+p_top+'px; visibility:hidden; z-index:1;">';
		layer_data += '<table border="0" cellspacing="1" cellpadding="0">';
		for(j = 1; j < menulist[i].length; j++){
			layer_data += '<tr><td align="center"><a href="'+menulist_link[i][j]+'" title="'+menulist[i][j]+' ">'+menulist[i][j]+'</a></td></tr>';
		}
		layer_data += '</table>';
		layer_data += '</div>';
	}
	document.getElementById("sub_menubutton").innerHTML = layer_data;

	//レイヤー非表示処理
	for(i = 0; i < menulist.length; i++){
		//NNの場合
		if(document.layers){
			document.layers["layermenu"+i].visibility = "hide";
		}
		//IEとNC6の場合
		if(document.getElementById){
			document.getElementById("layermenu"+i).style.visibility = "hidden";
		}
	}

	//レイヤー表示処理
	if(option != undefined){

		//現在の親カテゴリ選択状況
		sub_option = option;

		//NNの場合
		if(document.layers){
			document.layers["layermenu"+option].visibility = "show";
		}
		//IEとNC6の場合
		if(document.getElementById){
			document.getElementById("layermenu"+option).style.visibility = "visible";
		}
	}
}

function closesubnav(event, mode){
	if(sub_option != 9999 || sub_option == 0){
		submenu_count = menulist[sub_option].length;
		submenu_count = submenu_count - 1;
		if(document.all){
			//IE
			if(mode != 1){
				submenu_Y = 163;
			}
			else{
				submenu_Y = 497;
			}
		}
		else{
			//NN
			if(mode != 1){
				submenu_Y = 163; // 165
			}
			else{
				submenu_Y = 497;
			}
		}
		submenu_Y = submenu_Y + (submenu_count * 30);

		if((event.clientY < 124) || (event.clientY > submenu_Y)){
			submenu();
			sub_option = 9999;
			if(document.all){
				//IE
				if(mode != 1){
					submenu_Y = 163;
				}
				else{
					submenu_Y = 497;
				}
			}
			else{
				//NN
				if(mode != 1){
					submenu_Y = 163; // 165
				}
				else{
					submenu_Y = 497;
				}
			}
		}
	}
	else{
		submenu();
	}
}