function changeDate(selectedDate){
	document.changeDateForm.target="";
	document.changeDateForm.action="";
	document.changeDateForm.cdate.value=selectedDate;
	document.changeDateForm.submit();
}

function getChart(page, selectedDate){

	var win = openwindow("","detail",868,700);
	document.changeDateForm.action=page;
	document.changeDateForm.target="detail";

	document.changeDateForm.cdate.value=selectedDate;
	document.changeDateForm.submit();
	win.focus();

}

function showIndexInfo(anchor){

	var win = openwindow("about_kmatrixindex.html#"+anchor,"indexinfo",868,500);
	win.focus();

}

<!-- 
function openwindow(url,name, w,h)
{
	
	var win =window.open(url,name,"toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=no, width="+w+", height="+h);
	return win;
}
//-->