var objCurrentSubmenu = null;

function initLeftsearch(){
	for(var i = 1; i <= 3; i ++){
		var obj = document.getElementById("leftbar").getElementsByTagName("dd")[i].getElementsByTagName("a")[0];
		obj.onclick = function(){
			clearSubmenu();
			objCurrentSubmenu = this.parentNode.getElementsByTagName("ul")[0];
			objCurrentSubmenu.style.visibility = "visible";
			keepSubmenu();
			objCurrentSubmenu.onmouseover = function(){ keepSubmenu(); }
			objCurrentSubmenu.onmouseout = function(){ hideSubmenu(); }
			event.returnValue = false;
			return false;
		}
		obj.onmouseout = function(){ hideSubmenu(); }
	}
	document.getElementById("left-form").onsubmit = function(){ return checkLeftForm(); }
}
function hideSubmenu(){
	submenuTimer = setTimeout("clearSubmenu()", 700);
}
function keepSubmenu(){
	clearTimeout(submenuTimer);
}
function clearSubmenu(){
	if(objCurrentSubmenu) objCurrentSubmenu.style.visibility = "hidden";
	objCurrentSubmenu = null;
}
function checkLeftForm(){
	var keyword = trim(document.getElementById("left-keyword").value);
	if(keyword == "商品名またはモデル名" || keyword == ""){
		alert("検索文字が入力されていません。");
		document.getElementById("left-keyword").focus();
		return false;
	}else{
		return true;
	}
}
function trim(str){
	return str.replace(/^[\s　]+|[\s　]+$/g,"");
}