var chart = new Array();
	
	chart[0] = new Array("","","","");
	chart[1] = new Array("----------","----------","----------","----------");
	
	// us base
	chart[2] = new Array("1","1号","13.0mm","40.8mm");
	chart[3] = new Array("1-","1号 / 2号","13.1mm","40.4mm");
	chart[4] = new Array("2","2号","13.4mm","41.9mm");
	chart[5] = new Array("2-","3号","13.7mm","42.9mm");
	chart[6] = new Array("3","4号 / 5号","14.1mm","44.2mm");
	chart[7] = new Array("3-","5号 / 6号","14.5mm","45.5mm");
	chart[8] = new Array("4","6号 / 7号","14.9mm","46.7mm");
	chart[9] = new Array("4-","8号","15.4mm","48.2mm");
	chart[10] = new Array("5","9号","15.7mm","49.2mm");
	chart[11] = new Array("5-","10号","16.0mm","50.3mm");
	chart[12] = new Array("6","11号 / 12号","16.5mm","51.8mm");
	chart[13] = new Array("6-","12号 / 13号","16.9mm","53.1mm");
	chart[14] = new Array("7","14号","17.4mm","54.5mm");
	chart[15] = new Array("7-","15号","17.7mm","55.5mm");
	chart[16] = new Array("8","16号","18.0mm","56.5mm");
	chart[17] = new Array("8-","17号","18.4mm","57.6mm");
	chart[18] = new Array("9","18号","18.7mm","58.6mm");
	chart[19] = new Array("9-","19号","19.0mm","59.7mm");
	chart[20] = new Array("10","20号 / 21号","19.8mm","62.1mm");
	chart[21] = new Array("10-","21号 / 22号","20.2mm","63.3mm");
	chart[22] = new Array("11","23号","20.4mm","63.9mm");
	chart[23] = new Array("11-","24号","20.7mm","64.9mm");
	chart[24] = new Array("12","25号","21.0mm","66.0mm");
	chart[25] = new Array("12-","26号","21.4mm","67.0mm");
	chart[26] = new Array("13","27号","21.7mm","68.0mm");
	
	// jp base
	chart[27] = new Array("1","1号","13.0mm","40.8mm");
	chart[28] = new Array("2","2号","13.4mm","41.9mm");
	chart[29] = new Array("2-","3号","13.7mm","42.9mm");
	chart[30] = new Array("3","4号","14.0mm","44.0mm");
	chart[31] = new Array("3 / 3-","5号","14.4mm","45.0mm");
	chart[32] = new Array("3- / 4","6号","14.7mm","46.1mm");
	chart[33] = new Array("4","7号","15.0mm","47.1mm");
	chart[34] = new Array("4-","8号","15.4mm","48.2mm");
	chart[35] = new Array("5","9号","15.7mm","49.2mm");
	chart[36] = new Array("5-","10号","16.0mm","50.3mm");
	chart[37] = new Array("6","11号","16.4mm","51.3mm");
	chart[38] = new Array("6 / 6-","12号","16.7mm","52.4mm");
	chart[39] = new Array("6-","13号","17.0mm","53.4mm");
	chart[40] = new Array("7","14号","17.4mm","54.5mm");
	chart[41] = new Array("7-","15号","17.7mm","55.5mm");
	chart[42] = new Array("8","16号","18.0mm","56.5mm");
	chart[43] = new Array("8-","17号","18.4mm","57.6mm");
	chart[44] = new Array("9","18号","18.7mm","58.6mm");
	chart[45] = new Array("9-","19号","19.0mm","59.7mm");
	chart[46] = new Array("10","20号","19.4mm","60.7mm");
	chart[47] = new Array("10 / 10-","21号","19.7mm","61.8mm");
	chart[48] = new Array("10-","22号","20.0mm","62.8mm");
	chart[49] = new Array("11","23号","20.4mm","63.9mm");
	chart[50] = new Array("11-","24号","20.7mm","64.90mm");
	chart[51] = new Array("12","25号","21.0mm","66.0mm");
	chart[52] = new Array("12-","26号","21.4mm","67.0mm");
	chart[53] = new Array("13","27号","21.7mm","68.0mm");

function init() {

	document.conversion.us.options[0] = new Option(chart[0][0]);
	document.conversion.jp.options[0] = new Option(chart[0][1]);
	document.conversion.d.options[0]  = new Option(chart[0][2]);
	document.conversion.c.options[0]  = new Option(chart[0][3]);
	document.conversion.us.options[1] = new Option(chart[1][0]);
	document.conversion.jp.options[1] = new Option(chart[1][1]);
	document.conversion.d.options[1]  = new Option(chart[1][2]);
	document.conversion.c.options[1]  = new Option(chart[1][3]);
	
	for (i=2;i<=26;i++) {
		document.conversion.us.options[i] = new Option(chart[i][0]);
	}
	
	j=2;
	for (i=27;i<=53;i++) {
		document.conversion.jp.options[j] = new Option(chart[i][1]);
		document.conversion.d.options[j]  = new Option(chart[i][2]);
		document.conversion.c.options[j]  = new Option(chart[i][3]);
		j++;
	}
}

function change_us(i) {
	if (i==1) {
		document.conversion.us.options[0] = new Option(chart[0][0]);
		document.conversion.jp.options[0] = new Option(chart[0][1]);
		document.conversion.d.options[0]  = new Option(chart[0][2]);
		document.conversion.c.options[0]  = new Option(chart[0][3]);
		document.conversion.us.selectedIndex = 0;
		document.conversion.jp.selectedIndex = 0;
		document.conversion.d.selectedIndex  = 0;
		document.conversion.c.selectedIndex  = 0;
	}
	else {
		document.conversion.us.options[0] = new Option(chart[i][0]);
		document.conversion.jp.options[0] = new Option(chart[i][1]);
		document.conversion.d.options[0]  = new Option(chart[i][2]);
		document.conversion.c.options[0]  = new Option(chart[i][3]);
		document.conversion.us.selectedIndex = 0;
		document.conversion.jp.selectedIndex = 0;
		document.conversion.d.selectedIndex  = 0;
		document.conversion.c.selectedIndex  = 0;
	}
}

function change_jp(i) {
	if (i==1) {
		document.conversion.us.options[0] = new Option(chart[0][0]);
		document.conversion.jp.options[0] = new Option(chart[0][1]);
		document.conversion.d.options[0]  = new Option(chart[0][2]);
		document.conversion.c.options[0]  = new Option(chart[0][3]);
		document.conversion.us.selectedIndex = 0;
		document.conversion.jp.selectedIndex = 0;
		document.conversion.d.selectedIndex  = 0;
		document.conversion.c.selectedIndex  = 0;
	}
	else {
		document.conversion.us.options[0] = new Option(chart[i+25][0]);
		document.conversion.jp.options[0] = new Option(chart[i+25][1]);
		document.conversion.d.options[0]  = new Option(chart[i+25][2]);
		document.conversion.c.options[0]  = new Option(chart[i+25][3]);
		document.conversion.us.selectedIndex = 0;
		document.conversion.jp.selectedIndex = 0;
		document.conversion.d.selectedIndex  = 0;
		document.conversion.c.selectedIndex  = 0;
	}
}