/*
' ###########################################################
'   つばき形番ナビ マイタギヤボックス用JS
'                                  Create 2011.06.24 Noguchi
'                                  Modyfy ----.--.-- --------
' ###########################################################
*/
var sSeries    = "ED";
var sSize      = "2";
var sSokuhi    = "M-";
var sJiku      = "1-LR";
var sTrtk      = "-Y";

var sBfrSelJiku      = "1jiku";
var sBfrSelSize      = "2";
var lBfrSelJikuIndex = 0;

function GenKataban(){	// 形番の生成
	document.ktnv.kata.value = sSeries + sSize + sSokuhi + sJiku + sTrtk;
}

function SetSokuhi(){	// 速比のセット
	var oSokuhi = document.ktnv_ED.sokuhi;
	switch(sSize){
		case "2":
			oSokuhi[0].disabled = false;
			oSokuhi[1].disabled = true;
			oSokuhi[2].disabled = true;
			oSokuhi[3].disabled = true;
			oSokuhi[4].disabled = true;
			oSokuhi[0].checked = true;
			break;
		case "4":
		case "16":
		case "20":
		case "25":
			oSokuhi[0].disabled = false;
			oSokuhi[1].disabled = true;
			oSokuhi[2].disabled = false;
			oSokuhi[3].disabled = true;
			oSokuhi[4].disabled = true;
			if(oSokuhi[1].checked || oSokuhi[3].checked || oSokuhi[4].checked){
				oSokuhi[0].checked = true;
			}
			break;
		default :
			oSokuhi[0].disabled = false;
			oSokuhi[1].disabled = false;
			oSokuhi[2].disabled = false;
			oSokuhi[3].disabled = false;
			oSokuhi[4].disabled = false;
	}
	sSokuhi = GetRadio(oSokuhi);
}

function SetJiku(){	// 軸配置オプションの選択可否のセット
	var arrJiku;
	var i;
	var oJiku = document.ktnv_ED.jiku;
	var sJikuSel = GetRadio(document.ktnv_ED.jikusel);
	for (i=oJiku.length; i>=0; i--){oJiku.options[i] = null;}
	switch(sJikuSel){
		case "2jiku":
			switch(sSize){
				case "2":
					arrJiku = new Array("1-1-UD", "1-1-U", "1-1-D", "1-1-UD-O","1-1-U-O","1-1-D-O", "U-D-LR", "U-D-R", "U-D-L", "U-D-LR-O", "U-D-R-O", "U-D-L-O");
					break;
				default:
					arrJiku = new Array("1-1-LR", "1-1-R", "1-1-L", "1-1-LR-O", "1-1-R-O", "1-1-L-O", "1-1-UD", "1-1-U", "1-1-D", "1-1-UD-O", "1-1-U-O", "1-1-D-O", "U-D-LR", "U-D-R", "U-D-L", "U-D-LR-O", "U-D-R-O", "U-D-L-O");
			}
			break;
		default :
			arrJiku = new Array("1-LR", "1-R", "1-L", "1-LR-O", "1-R-O", "1-L-O", "1-UD", "1-U", "1-D", "1-UD-O", "1-U-O", "1-D-O", "U-LR", "U-R", "U-L", "U-LR-O", "U-R-O", "U-L-O", "D-LR", "D-R", "D-L", "D-LR-O", "D-R-O", "D-L-O");
	}
	for (i=0; i<=arrJiku.length - 1; i++){oJiku.options[i] = new Option(arrJiku[i], arrJiku[i]);}
	if((sJikuSel == "2jiku") && (sSize == "2")){
		switch(lBfrSelJikuIndex){
			case 9:
				oJiku.selectedIndex = 1;
				break;
			case 12:
				oJiku.selectedIndex = 2;
				break;
			case 15:
				oJiku.selectedIndex = 3;
				break;
			default:
				oJiku.selectedIndex = 0;
		}
	}else{
		if((sBfrSelSize == "2") && (sBfrSelJiku == "2jiku")){
			switch(lBfrSelJikuIndex){
				case 1:
					oJiku.selectedIndex = 9;
					break;
				case 2:
					oJiku.selectedIndex = 12;
					break;
				case 3:
					oJiku.selectedIndex = 15;
					break;
				default:
					oJiku.selectedIndex = 6;
			}
		}else{
			if((sBfrSelJiku == "1jiku") && (sJikuSel == "2jiku") && (lBfrSelJikuIndex >= 18)){
				oJiku.selectedIndex = lBfrSelJikuIndex - 6;
			}else{
				oJiku.selectedIndex = lBfrSelJikuIndex;
			}
		}
	}
	sJiku = GetSelect(oJiku);
	sBfrSelJiku = sJikuSel;
	sBfrSelSize = sSize;
	lBfrSelJikuIndex = oJiku.selectedIndex;
}

function SetTrtk(){	// 取付形式のセット
	var oTrtk = document.ktnv_ED.trtk;
	switch(sSize){
		case "2":
		case "4":
			oTrtk[0].disabled = false;
			oTrtk[1].disabled = true;
			oTrtk[2].disabled = true;
			oTrtk[3].disabled = true;
			oTrtk[4].disabled = true;
			oTrtk[5].disabled = true;
			oTrtk[0].checked = true;
			break;
		default :
			oTrtk[0].disabled = false;
			oTrtk[1].disabled = false;
			oTrtk[2].disabled = false;
			oTrtk[3].disabled = false;
			oTrtk[4].disabled = false;
			oTrtk[5].disabled = false;
	}
	sTrtk = GetRadio(oTrtk);
}

function ChkSize(){	// サイズを変更した場合
	sSize = GetSelect(document.ktnv_ED.size);
	SetSokuhi();
	SetTrtk();
	SetJiku();
	GenKataban();
}

function ChkSokuhi(){	// 速比を変更した場合
	sSokuhi = GetRadio(document.ktnv_ED.sokuhi);
	GenKataban();
}

function ChgJiku(){	// ラテラル軸数を変更した場合
	SetJiku();
	GenKataban();
}

function ChkJiku(){	// 軸配置を変更した場合
	sJiku = GetSelect(document.ktnv_ED.jiku);
	lBfrSelJikuIndex = document.ktnv_ED.jiku.selectedIndex;
	GenKataban();
}

function ChkTrtk(){	// 取付形式を変更した場合
	sTrtk = GetRadio(document.ktnv_ED.trtk);
	GenKataban();
}