function first_change(x,y){
	/////////////////////////////////////////////////////
	now_play = "<img src='http://www.cdjournal.com/image/parts/nowload.gif'> 読み込んでいます…";
	/////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	// タブの変更
	var navi_bgcr = new Array();
	var navi_wet = new Array();
	var navi_font = new Array();

	// 基本値
	for(i=0; i < 8; i++){
		navi_bgcr[i] = "#FFEEEE";
		navi_wet[i] = "normal";
		navi_font[i] = "solid";
	}

	//　該当箇所を変更
	if(x == "") x = 0;
	
	navi_bgcr[x] = "#FFFFFF";
	navi_wet[x] = "bold";
	navi_font[x] = "none";


	//　処理
	document.getElementById("first_navi_a").style.backgroundColor = navi_bgcr[0];
	document.getElementById("first_navi_b").style.backgroundColor = navi_bgcr[1];
	document.getElementById("first_navi_c").style.backgroundColor = navi_bgcr[2];
	document.getElementById("first_navi_d").style.backgroundColor = navi_bgcr[3];
	document.getElementById("first_navi_e").style.backgroundColor = navi_bgcr[4];
	document.getElementById("first_navi_f").style.backgroundColor = navi_bgcr[5];
	document.getElementById("first_navi_g").style.backgroundColor = navi_bgcr[6];
	document.getElementById("first_navi_h").style.backgroundColor = navi_bgcr[7];

	document.getElementById("first_navi_a").style.fontWeight = navi_wet[0];
	document.getElementById("first_navi_b").style.fontWeight = navi_wet[1];
	document.getElementById("first_navi_c").style.fontWeight = navi_wet[2];
	document.getElementById("first_navi_d").style.fontWeight = navi_wet[3];
	document.getElementById("first_navi_e").style.fontWeight = navi_wet[4];
	document.getElementById("first_navi_f").style.fontWeight = navi_wet[5];
	document.getElementById("first_navi_g").style.fontWeight = navi_wet[6];
	document.getElementById("first_navi_h").style.fontWeight = navi_wet[7];

	document.getElementById("first_navi_a").style.borderBottomWidth = "1px";
	document.getElementById("first_navi_a").style.borderBottomColor = "#DADADA";

	document.getElementById("first_navi_a").style.borderBottomStyle = navi_font[0];
	document.getElementById("first_navi_b").style.borderBottomStyle = navi_font[1];
	document.getElementById("first_navi_c").style.borderBottomStyle = navi_font[2];
	document.getElementById("first_navi_d").style.borderBottomStyle = navi_font[3];
	document.getElementById("first_navi_e").style.borderBottomStyle = navi_font[4];
	document.getElementById("first_navi_f").style.borderBottomStyle = navi_font[5];
	document.getElementById("first_navi_g").style.borderBottomStyle = navi_font[6];
	document.getElementById("first_navi_h").style.borderBottomStyle = navi_font[7];

	document.getElementById("top_body").innerHTML = now_play;
	////////////////////////////////////////////////////
	/////////////////////////////////////////////////////
	// Mozilla, Firefox, Safari, IE7
	if (window.XMLHttpRequest){
		httpObject = new XMLHttpRequest();
	// IE5, IE6
	} else if (window.ActiveXObject){
		try {
			httpObject = new ActiveXObject("Msxml2.XMLHTTP"); 
		} catch(e) {
			httpObject = new ActiveXObject("Microsoft.XMLHTTP"); 
		}
	}
	///////////////////////////////////////////////	
	// サーバーからデータ到着後に実行する関数
	httpObject.onreadystatechange = display_f_change;
	///////////////////////////////////////////////	
	// HTTP非同期通信でPHPにアクセス  page
	httpObject.open ("GET", "script_first/first_change.php?type=" + x + "&page=" + y + "&" + (new Date).getTime(), true);
	httpObject.send (null);
}

	///////////////////////////////////////////////	
	// 表示
	function display_f_change(){
		if(httpObject.readyState == 4 && httpObject.status == 200){
			top_body_txt = decodeURIComponent(httpObject.responseText);
			
			document.getElementById("top_body").innerHTML = top_body_txt;
		}
	}
	///////////////////////////////////////////////	
	///////////////////////////////////////////////