function checknum(num)
{
	if (isNaN(num)&& num!='.')
	{
		alert('请输入数字！');//不要提示可去调
		return '';
	}
	return num;
}

function showtime(){
today=new Date();
var hours = today.getHours();
var minutes = today.getMinutes();
var seconds = today.getSeconds();
var timeValue = "" + ((hours >12) ? hours -12 :hours); timeValue += ((minutes < 10) ? "<BLINK>:</FONT></BLINK>0" : "<BLINK>:</FONT></BLINK>") + minutes+"</FONT></FONT>";
timeValue += (hours >= 12) ? "<FONT COLOR=><B></B></FONT>" : "<FONT COLOR=''><B></B></FONT>";

var d=new IinitArray("星期日","星期一","星期二","星期三","星期四","星期五","星期六");

return (today.getYear() + "<font color=>-" + "" + (today.getMonth()+1) + "<font color=>-" + "" + today.getDate() + " </FONT>" + d[today.getDay()+1] + " " + timeValue); 

}
function MM_reloadPage(init) { 
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
function IinitArray(){
	this.length=IinitArray.arguments.length;
	for(var i=0;i<this.length;i++){
		this[i+1]=IinitArray.arguments[i];
	}
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.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];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function ShowMenu(thisID)
{
 	SmallClassHtmlStr.innerHTML = eval("SmallDiv" + thisID + ".innerHTML");
}//翻转图片的横向下拉菜单第1步：加入第1段代码到此

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.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];}}
}

function MM_findObj(n, d) { //v4.01
  ShowMenu(n);//翻转图片的横向下拉菜单第2步：加入第2段代码到此
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

	function CheckForm(str)
	{
	if(str =="" || str == null)
	{
		if(document.UserLogin.UserName.value=="")
		{
			alert("请输入用户名！");
			document.UserLogin.UserName.focus();
			return false;
		}
		if(document.UserLogin.Password.value == "")
		{
			alert("请输入密码！");
			document.UserLogin.Password.focus();
			return false;
		}
	}
	else
	{
		if(document.TopLogin.UserName.value=="")
		{
			alert("请输入用户名！");
			document.TopLogin.UserName.focus();
			return false;
		}
		if(document.TopLogin.Password.value == "")
		{
			alert("请输入密码！");
			document.TopLogin.Password.focus();
			return false;
		}
	}
	}
	function SetFocus()
	{
		if (document.TopLogin.UserName.value=="")
			document.TopLogin.UserName.focus();
		else
			document.TopLogin.UserName.select();
	}
function tech_check()
{
var cdt = document.submitform;
	if  (document.submitform.txt_Name.value == "")
	{
		alert("请正确输入您的姓名!");
		document.submitform.txt_Name.focus();
		return false;
	}


	if  (document.submitform.txtage.value == "")
	{
		alert("请正确输入您的年龄!");
		document.submitform.txtage.focus();
		return false;
	}

	if  (document.submitform.txtphone.value == "")
	{
		alert("请正确输入您的电话!");
		document.submitform.txtphone.focus();
		return false;
	}

	if  (!(isEmail(document.submitform.txtemail.value )))
	{
	alert("请正确输入您的EMAIL地址!");
	document.submitform.txtemail.focus();
	return false;
	}
}
function opencat(cat,img)
{
  if(cat.style.display=="none"){
     cat.style.display="";
     img.src="../images/dot_arrow.gif" ;
  } else {
     cat.style.display="none"; 
     img.src="../images/dot_arrow.gif" ;
  }
}