function fetch_object(idname)
{
	var my_obj = document.getElementById(idname);
	return my_obj;
}
function toggle_nav(obj)
{
	for (i = 1; i<= 9; i++  )
	{
		var nav_hover = fetch_object("na_" + i);
		var nav_img = fetch_object("nav_" + i);
		var sub_nav = fetch_object("sub_nav_" + i);
		var sub_nav_index =  fetch_object("sub_nav_0");
		sub_nav_index.style.display = "none";
		if (obj == i)
		{
			document.getElementById("na_"+i).className="nh";
			//nav_img.src = "images/nav/nav_" + i + "_on.gif";
			sub_nav.style.display = "block";
		}
		else
		{
			document.getElementById("na_"+i).className="nn";
			//nav_img.src = "images/nav/nav_" + i + "_off.gif";
			sub_nav.style.display = "none";
		}
	}
}

function imgAlphaIn(imgsub)
{
	imgsub.style.filter="alpha(opacity=50)";
}
function imgAlphaOut(imgsub)
{
	imgsub.style.filter="alpha(opacity=100)";
}
function buttonIn(getspan)
{
	getspan.style.backgroundColor="#C3FF65";
}
function buttonOut(getspan)
{
	getspan.style.backgroundColor="#86CEFF";
}
function MessageAddValid(){
if(MessageAddForm.txtLinkMan.value==""){
alert("联系人不能为空");
MessageAddForm.txtLinkMan.focus();
return false;
}
if(MessageAddForm.txtEmail.value==""){
alert("E-mail不能为空");
MessageAddForm.txtEmail.focus();
return false;
}
var strEmail = MessageAddForm.txtEmail.value;
if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1) {
} else {
alert("E-mail格式不正确!");
MessageAddForm.txtEmail.focus();
return false;
}
if(MessageAddForm.txtTel.value==""){
alert("联系电话不能为空");
MessageAddForm.txtTel.focus();
return false;
}
if(MessageAddForm.txtTitle.value==""){
alert("留言标题不能为空");
MessageAddForm.txtTitle.focus();
return false;
}
if(MessageAddForm.txtContent.value==""){
alert("留言内容不能为空");
MessageAddForm.txtContent.focus();
return false;
}
}
function inputout(thisis){
thisis.style.borderColor='#a8a8a8'
}
function inputover(thisis){
thisis.style.borderColor='#013C9D'
}