// JavaScript Document
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_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 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 windowOpener(loadpos)
{
	controlWindow=window.open(loadpos,"surveywin","toolbar=yes,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=450,height=310");
}

function gook() {
	if (f1.usernameshow.value == "")
	{
		alert("用户名不可为空");
		usernameshow.focus();
		return ;
	}
	if (f1.pwshow.value == "")
	{
		alert("密码不可为空");
		pwshow.focus();
		return ;
	}
	f1.username.value = f1.usernameshow.value;
	f1.pwhidden.value = encode(f1.pwshow.value, parseInt(f1.picnum.value));
}

function encode(datastr, bassnum) {
	var tempstr;
	var tchar;
	var newdata = "";
	for (var i = 0; i < datastr.length; i++)
	{
		tchar = 65535 + bassnum - datastr.charCodeAt(i);
		tchar = tchar.toString();
		while(tchar.length < 5)
		{
			tchar = "0" + tchar;
		}
		newdata = newdata + tchar;
	}
	return newdata;
}