function MM_findObj(n, d) { //v4.01
  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_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 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 validname(str1)
{
	if (str1.value.length <1) {
		alert("请输入您的大名，名字不能为空！");
		str1.focus();
		return false;
	}
	str=str1.value.toString();
	if( ((str.search("#")!=-1)||(str.search('&')!=-1))){
		alert("名字中不能包含特殊字符: # & .");
		str1.focus();
		return false;
	}
	return true;
}
function go()
{
	if(validname(document.form1.elements[0])){
		launchchat();
		document['form1'].method='get';
		document.form1.submit();
	}
}
var focusok=false;

if (navigator.appName == "Netscape") {
	focusok=true;
}
vers = navigator.appVersion;
if (navigator.appName == "Microsoft Internet Explorer") {
 pos = vers.lastIndexOf('.'); 
}
proper_version = parseFloat(vers); 
if(proper_version>=5){
	focusok=true;
}
function launchchat() {
	var chat = window.open("","chat","top=0,left=0,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=790,height=530");
	if(focusok){
		chat.focus();
	}
	return true;
}
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}