var toggleMenu = {
	init : function(sContainerClass, sHiddenClass) {
		if (!document.getElementById || !document.createTextNode) {return;} // Check for DOM support
		var arrMenus = this.getElementsByClassName(document, 'ul', sContainerClass);
		var arrSubMenus, oSubMenu, oLink;
		for (var i = 0; i < arrMenus.length; i++) {
			arrSubMenus = arrMenus[i].getElementsByTagName('ul');
			for (var j = 0; j < arrSubMenus.length; j++) {
				oSubMenu = arrSubMenus[j];
				oLink = oSubMenu.parentNode.getElementsByTagName('a')[0];
				oLink.onclick = function(){toggleMenu.toggle(this.parentNode.getElementsByTagName('ul')[0], sHiddenClass); return false;}
				this.toggle(oSubMenu, sHiddenClass);
			}
		}
	},
	toggle : function(el, sHiddenClass) {
		var oRegExp = new RegExp("(^|\\s)" + sHiddenClass + "(\\s|$)");
		el.className = (oRegExp.test(el.className)) ? el.className.replace(oRegExp, '') : el.className + ' ' + sHiddenClass; // Add or remove the class name that hides the element
	},
/* addEvent function from http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html */
	addEvent : function(obj, type, fn) {
		if (obj.addEventListener)
			obj.addEventListener(type, fn, false);
		else if (obj.attachEvent) {
			obj["e"+type+fn] = fn;
			obj[type+fn] = function() {obj["e"+type+fn](window.event);}
			obj.attachEvent("on"+type, obj[type+fn]);
		}
	},
/*
Written by Jonathan Snook, http://www.snook.ca/jonathan
Add-ons by Robert Nyman, http://www.robertnyman.com
*/
	getElementsByClassName : function(oElm, strTagName, strClassName){
	    var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
	    var arrReturnElements = new Array();
	    strClassName = strClassName.replace(/\-/g, "\\-");
	    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	    var oElement;
	    for(var i=0; i<arrElements.length; i++){
	        oElement = arrElements[i];      
	        if(oRegExp.test(oElement.className)){
	            arrReturnElements.push(oElement);
	        }   
	    }
	    return (arrReturnElements)
	}
};
toggleMenu.addEvent(window, 'load', function(){toggleMenu.init('menu','hidden');});

/*弹出层*/
function show(){
    var iWidth = document.documentElement.clientWidth;
	var iHeight = document.documentElement.clientHeight;
	var bgObj = document.createElement("div");
	bgObj.setAttribute("id","bgbox");
	bgObj.style.width = iWidth+"px";
	bgObj.style.height =Math.max(document.body.clientHeight, iHeight)+"px";
	document.body.appendChild(bgObj);
	var oShow = document.getElementById('show');
		oShow.style.display = 'block';
          oShow.style.left = (iWidth-390)/2+"px";
		oShow.style.top = (iHeight-410)/2+"px";
	var oClosebtn = document.createElement("span");
		oClosebtn.innerHTML = "×";
		oShow.appendChild(oClosebtn);
	function oClose(){
		oShow.style.display = 'none';
        	document.body.removeChild(bgObj);
		oShow.removeChild(oClosebtn);
	}
	oClosebtn.onclick = oClose;
	bgObj.onclick = oClose;
        function getEvent() {
	    return window.event || arguments.callee.caller.arguments[0];
        }
	document.onkeyup = function(){
		var event = getEvent();
		if (event.keyCode == 27){
			oClose();
		}
	}
	var moveX = 0;
	var moveY = 0;
	var moveTop = 0;
	var moveLeft = 0;
	var moveable = false;
	var docMouseMoveEvent = document.onmousemove;
	var docMouseUpEvent = document.onmouseup;
	titleBar =  document.getElementById('titlebar');
	titleBar.onmousedown = function() {
		var evt = getEvent();
		moveable = true;
		moveX = evt.clientX;
		moveY = evt.clientY;
		moveTop = parseInt(oShow.style.top);
		moveLeft = parseInt(oShow.style.left);
		document.onmousemove = function() {
			if (moveable) {
				var evt = getEvent();
				var x = moveLeft + evt.clientX - moveX;
				var y = moveTop + evt.clientY - moveY;
				if ( x > 0 &&( x + 302 < iWidth) && y > 0 && (y + 202 < iHeight) ) {
					oShow.style.left = x + "px";
					oShow.style.top = y + "px";
				}
			}
		};
		document.onmouseup = function () {
			if (moveable) {
				document.onmousemove = docMouseMoveEvent;
				document.onmouseup = docMouseUpEvent;
				moveable = false;
				moveX = 0;
				moveY = 0;
				moveTop = 0;
				moveLeft = 0;
			}
		};
	}
}

function ChkFields() {
	if (document.mainform.Email.value=='') {
		window.alert ("请输入电子邮件！");
		mainform.Email.focus();
		return false
	}
	if (document.mainform.add1.value=='') {
		window.alert ("请输入通讯地址！");
		mainform.add1.focus();
		return false
	}
	
	return true
}