var ns4 = (document.layers)? 1 : 0 ;
var ie = (document.all)? 1 : 0 ;
var usr = navigator.userAgent
var objns6 = (usr.indexOf('Netscape6')!=-1)? 1 : 0 ;
var ns = (document.getElementById)? 1 : 0 ;
var isMac = (navigator.userAgent.indexOf('Mac')!=-1) ;
var brsr = (navigator.appName.indexOf("Netscape")!=-1) ;

function getParameter(str, name)
{
  var res = "";
  if (str.indexOf("?")!=-1)
  {
    str = str.substring(str.indexOf("?")+1, str.length);
    if (str.indexOf(name)!=-1)
    {
      if (str.indexOf("&", str.indexOf(name)+name.length)!=-1)
        res = str.substring(str.indexOf(name)+name.length+1, str.indexOf("&"))
	  else
        res = str.substring(str.indexOf(name)+name.length+1, str.length);
	}
  }
  return res;
}

function showBig(imageName, windowName, width, height)
{
  if (width<260)
    width=260;
  win = window.open("big.htm?path="+imageName,windowName,"width="+Number(width+30)+",height="+Number(height+105)+",left=17,top=17,statusbar=no,toolbar=no,scrollbars= never,navbar=no");
  win.focus();
}

function loadfocus()
{
  if ((navigator.appName== "Netscape" && parseInt(navigator.appVersion) >= 4)|| (navigator.appName.indexOf("Microsoft") != -1 && parseInt(navigator.appVersion) > 3))
    browserVer = '1';
  else
    browserVer = '2';
  if (browserVer == 1)
	window.focus();
  return true;
}

function showImage(id, src)
{
  if (ie)
	document.all[id].src = src;
  else if (ns)
	document.getElementById(id).src = src;
}

function showMessage(id, text)
{
  if(ie)
	document.all[id].innerHTML = text;
  else if (ns)
	document.getElementById(id).innerHTML = text;
}

function showElement(id)
{
  if(ie)
	document.all[id].style.visibility = "visible";
  else if (ns)
	document.getElementById(id).style.visibility = "visible";
}

function hideElement(id)
{
  if(ie)
	document.all[id].style.visibility = "hidden";
  else if (ns)
	document.getElementById(id).style.visibility = "hidden";
}