//BODYロード時の設定
window.onload = function (){
	//タブのスタイルの初期設定
	//changetab('summary');

	//タブのクリック時のイベント設定
	document.getElementById("tab_summary").onclick = function (){
		changetab('summary');
	}
	document.getElementById("tab_sample").onclick = function (){
		changetab('sample');
	}
	document.getElementById("tab_download").onclick = function (){
		changetab('download');
	}
}

//タブのスタイル設定
function changetab(tab){
	var tabs = new Array("summary", "sample", "download");
	var i;
	for (i=0; i<tabs.length; i++) {
		if (tabs[i]==tab) {
			document.getElementById("tab_" + tabs[i]).className = "tabon";
			document.getElementById("panel_" + tabs[i]).style.display = "block";
		} else {
			document.getElementById("tab_" + tabs[i]).className = "taboff";
			document.getElementById("panel_" + tabs[i]).style.display = "none";
		}
	}
}