function goBackNumber(val)
{
	var currDirArray = new Array();
	currDirArray = document.URL.split("/");
	var currentFileName = currDirArray[currDirArray.length - 1];
	currentFileName = currentFileName.substr(10, 2);
	//alert(currentFileName);
	
	//var val = '';
	//val = document.select_gakunenn_form.sel.value;
	
	if(val == 'lineup')
	{
		location.href = 'lineup/';
	}
	else if(val != 'default')
	{
		location.href = 'kagaku' + val + currentFileName + '.html';
	}
	
}


function insertSelectBackNumberForm()
{
	var str = '';
	
	str += '<form class="select_gakunenn_form" name="select_gakunenn_form" id="select_gakunenn_form">';
	str += '<select name="sel" size="1" onchange="goBackNumber(this.value);">';
	str += '<option value="default" selected="selected">バックナンバー</option>';
	str += '<option value="0704">4月号</option>';
	str += '<option value="0705">5月号</option>';
	str += '<option value="0706">6月号</option>';
	str += '<option value="0707">7月号</option>';
	str += '<option value="0708">8月号</option>';
	str += '<option value="0709">9月号</option>';
	str += '<option value="0710">10月号</option>';
	str += '<option value="0711">11月号</option>';
	str += '<option value="0712">12月号</option>';
	str += '<option value="0801">1月号</option>';
	str += '<option value="0802">2月号</option>';
	str += '<option value="0803">3月号</option>';
	str += '<option value="lineup">年間ラインアップ</option>';
	str += '</select>';
	str += '</form>';
	
	
	document.write(str);
}



function openMovieWin(grade)
{
	if(!movieWin) var movieWin;
	
	url = "/kagaku/mag_kagaku/video/video" + grade + ".html";
	
	var option = "";
	option += "scrollbars=no,location=no,menubar=no,resizable=no,status=no,toolbar=no,directories=no,width=470,height=390";
	
	movieWin = window.open(url, "movieWin", option);
	movieWin.focus();
	
}