////class取得//////////////////////////////////////////////////////////////////////////////
document.getElementsByClassName = function(className) {
	var elementsAll = document.getElementsByTagName('*') || document.all;
	var elements = new Array();
	for(var i = 0; i < elementsAll.length; i++) {
		var classNames = elementsAll[i].className.split(' ');
		for(var j = 0; j < classNames.length; j++) {
			if (classNames[j] == className) {
				elements[elements.length] = elementsAll[i];
				break;
			}
		}
	}
	return elements;
}
//// 画像のプリロード //////////////////////////////////////////////////////////////////////////
function cxPreImages() {
	var d=document;
	if(d.images){
		if(!d.MM_p) d.MM_p=new Array();
	    var i;
		var j=d.MM_p.length;
		var a=cxPreImages.arguments;
		for(i=0; i<a.length; i++) {
		    if (a[i].indexOf("#")!=0){ 
				d.MM_p[j]=new Image;
				d.MM_p[j++].src=a[i];
			}
		}
	}
}
cxPreImages('/company/eco/images/l_navi_icon_plus.gif','/company/eco/images/l_navi_icon_minus.gif');
//// 要素展開 //////////////////////////////////////////////////////////////////////////
function expandHidden() {
	var objCls = document.getElementsByClassName("area_hidden");
	for (var i=0;i<objCls.length;i++){
		objCls[i].style.display = "none";
	}
}
function expand(thisSwitch) {
	var objHdn = thisSwitch;
	var objBtn = thisSwitch;
	var objBtn = objBtn.getElementsByTagName("IMG")[0];
	var objPar = objHdn.parentNode;
	var objHdn = objHdn.parentNode;
	while(true) {		
		objHdn = objHdn.nextSibling;
		if(objHdn && objHdn.tagName && objHdn.tagName == "UL") {	
			break;
		}
	}
	if (objHdn.className == "area_hidden") {
		if (objHdn.style.display == "block") {
			objHdn.style.display = "none";
			objBtn.src = "/company/eco/images/l_navi_icon_plus.gif";
			objBtn.alt = "Open";
			objPar.style.background = "none";
		} else if (objHdn.style.display == "none") {
			objHdn.style.display = "block";
			objBtn.src = "/company/eco/images/l_navi_icon_minus.gif";
			objBtn.alt = "Close";
			objPar.style.backgroundColor = "#E1F1CB";
		} else {
			objHdn.style.display = "block";
			objBtn.src = "/company/eco/images/l_navi_icon_minus.gif";
			objBtn.alt = "Close";
			objPar.style.backgroundColor = "#E1F1CB";
		}
	}else if (objHdn.className == "area_active") {
		if (objHdn.style.display == "block") {
			objHdn.style.display = "none";
			objBtn.src = "/company/eco/images/l_navi_icon_plus.gif";
			objBtn.alt = "Open";
			objPar.style.background = "none";
		} else if (objHdn.style.display == "none") {
			objHdn.style.display = "block";
			objBtn.src = "/company/eco/images/l_navi_icon_minus.gif";
			objPar.style.backgroundColor = "#E1F1CB";
		} else {
			objHdn.style.display = "none";
			objBtn.src = "/company/eco/images/l_navi_icon_plus.gif";
			objBtn.alt = "Open";
			objPar.style.background = "none";
		}
	}
}

//// onload //////////////////////////////////////////////////////////////////////////
window.onload = function() {
	expandHidden();
	MM_preloadImages('/shared/images/glo_n012.gif','/shared/images/glo_n022.gif','/shared/images/glo_n032.gif','/shared/images/glo_n042.gif','/shared/images/glo_n052.gif','/shared/images/glo_n062.gif','/shared/images/glo_n072.gif');
}