// 图片模拟flash
var index = 1;
function flash()
{
	var imgFlash = document.getElementById('imgFlash');
	index = parseInt(index) + 1;
	if (index < 6) {
		imgFlash.src = '../../Images/zymz1/flash-0'+ index +'.jpg';
	} else {
		index = 1;
		imgFlash.src = '../../Images/zymz1/flash-0'+ index +'.jpg';
	}
	setTimeout(flash, 10000);
}

// 层的隐藏和显示
function showDiv(obj) {
	for (var i = 1; i < 4; i++) {	
		var div = document.getElementById(i);
		if (obj == i) {
			div.style.display = "block";
		} else {
			div.style.display = "none";
		}
	}
}

showmenu = function (obj) {
	for (var i = 1; i < 7; i++)	{
		var im = document.getElementById(('img' + i));
		var di = document.getElementById(('div' + i));
		
		if (obj == i) {
			im.src = '../../Images/zymz1/0' + i + '.gif';
			di.style.display = 'block';
		} else {
			im.src = '../../Images/zymz1/' + i + '.gif';
			di.style.display = 'none';
		}
	}
}

function swit(obj) {
	for (var i = 1; i < 4; i++) {
		var sp = document.getElementById(('sp' + i));
		var dv = document.getElementById(('d' + i));
		
		if (obj == i) {
			sp.style.color = 'FF0000';
			dv.style.display = 'block';
		} else {
			sp.style.color = '#FFFFFF';
			dv.style.display = 'none';
		}
	}
}

function formcheck()
{ 
	if (document.add.name.value == "")
	{
		alert("请填写您的姓名！");
		document.add.name.focus();
		return (false);
	}
	
	if (document.add.body.value == "")
	{
		alert("请填写留言内容！");
		document.add.body.focus();
		return (false);
	}
	
	if (document.add.body.value.length > 300)
	{
		alert("留言内容不能超过300个字符！");
		document.add.body.focus();
		return false;
	}

return true;
}