function getCookie(NameOfCookie)
{ 
	if (document.cookie.length > 0) 
	{ 
		begin = document.cookie.indexOf(NameOfCookie+"="); 
		if (begin != -1) 
		{ 
			begin += NameOfCookie.length+1; 
			end = document.cookie.indexOf(";", begin);
			if (end == -1) end = document.cookie.length;
				return unescape(document.cookie.substring(begin, end)); 
		} 
	}
	return null; 
}

function setCookie(NameOfCookie, value, expiredays) 
{ 
	var ExpireDate = new Date ();
	ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
	document.cookie = NameOfCookie + "=" + escape(value) + 
	((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString());
}

function delCookie (NameOfCookie) 
{ 
	if (getCookie(NameOfCookie)) 
	{
		document.cookie = NameOfCookie + "=" +"; expires=Thu, 01-Jan-70 00:00:01 GMT";
	}
}

function init(page)
{
	session=getCookie('memdbSession');
	if (session!=null)
	{	
		var ran=Math.random();
                if(page=='login')
		   location.href='/?page=controlPage&session='+session+'&ran='+ran;
		else 
		   location.href='/?page='+page+'&session='+session+'&ran='+ran;
	}
	else 
	{
	   if(page=='controlPage')
	   {
	      location.href='/login.htm';
           }
	}
}

function initRank(oid)
{
	session=getCookie('memdbSession');
	if (session!=null)
	{	
		var ran=Math.random();
		location.href='?page=rank&oid='+oid+'&session='+session+'&ran='+ran;
	}
	else 
	{
		inputForm['mark'].focus();
	}
}

function initOid(oid,page)
{
	session=getCookie('memdbSession');
	if (session!=null)
	{	
		var ran=Math.random();
		location.href='?page='+page+'&oid='+oid+'&session='+session+'&ran='+ran;
	}
	else 
	{
		closeButton.focus();
	}
}

function validateForm (form)
{
	if(form['id'].value=='')
	{
        form['id'].focus();
        return false;
	}
	if(form['password'].value.length<4)
	{
        form['password'].focus();
        return false;
	}
      var ran=Math.random();
	location.href='?page=checkLogin&id='+form['id'].value+"&password="+form['password'].value+'&ran='+ran;
     return false;
}


function Editable(obj)
{
	if (obj == null)
		return false;
	else if (obj.nodeName == "TEXTAREA"  || (obj.nodeName == "INPUT" && (obj.type == "text" || obj.type == "password")))
	{
		return true;
	}
	else
	{
		return false;
	}
}

function IsInput(obj)
{
	if (obj == null)
		return false;
	else if(obj.nodeName == "SELECT")
	{
		return true;
	}
	else if (obj.nodeName == "INPUT" && (obj.type == "text" || obj.type == "password"||obj.type=="checkbox"))
	{
		return true;
	}
	else
	{
		return false;
	}
}

function IsButton(obj)
{
	if (obj == null)
		return false;
	else if (obj.nodeName == "INPUT" && (obj.type == "button" || obj.type == "submit"))
	{
		return true;
	}
	else
	{
		return false;
	}
}

function MouseOver()
{
	if (IsButton(event.srcElement)) 
	{
		event.srcElement.style.borderColor = "0000FF";
		event.srcElement.style.backgroundColor = "999999";
	}
}

function MouseOut()
{
	if (IsButton(event.srcElement)) 
	{
		event.srcElement.style.borderColor = '000000';
		event.srcElement.style.backgroundColor = 'CCCCCC';
	}
}

function FocusIn()
{
	if (Editable(event.srcElement)) 
        {
		event.srcElement.style.borderColor = "0000FF";
		event.srcElement.style.backgroundColor = "99FFFF";
	}
	else if (IsButton(event.srcElement)) 
        {
		event.srcElement.style.borderColor = "0000FF";
		event.srcElement.style.backgroundColor = "999999";
	}
}


function FocusOut()
{
	if (Editable(event.srcElement)) {
		event.srcElement.style.borderColor = 'CCCCCC';
		event.srcElement.style.backgroundColor = 'FFFFFF';
	}
	else if (IsButton(event.srcElement)) {
		event.srcElement.style.borderColor = '000000';
		event.srcElement.style.backgroundColor = 'CCCCCC';
	}
}

function KeyDown()
{
        if(event.keyCode==122)
        {
           event.keyCode = 0;
           return false;
        }
	if (event.keyCode == 13 ) // enter
	{
           if (IsInput(event.srcElement)) 
           {
              event.keyCode = 9;
           }
	}
	return event.keyCode;
}

function ContextMenu()
{
   return false;
}

function formatTable(oTable)
{
  var rows=document.all(oTable).rows;
  for(var i=0;i<rows.length;i++)
  {
    if((i%2)==0) {
      rows[i].style.backgroundColor = "#FFFFCC";
      rows[i].style.color = "000000";
    } else {
      rows[i].style.backgroundColor = "#FFFFFF";
      rows[i].style.color = "000000";
    }
  }
}

/*
document.onfocusin = FocusIn;
document.onfocusout = FocusOut;
document.onmouseover = MouseOver;
document.onmouseout = MouseOut;
document.onkeydown = KeyDown;
document.oncontextmenu= ContextMenu;
*/