function Browser() {

  var ua, s, i;

  this.isIE    = false;
  this.isNS    = false;
  this.version = null;

  ua = navigator.userAgent;

  s = "MSIE";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Netscape6/";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  // Treat any other "Gecko" browser as NS 6.1.

  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = 6.1;
    return;
  }
}

var browser = new Browser();

function decision(url,question){
	var answer = confirm(question)
	if (answer){
		window.location = url;
	}

}

function $(id){
	return document.getElementById(id);	
}

function ajax(url){
  var startmargin = -200;
  if (browser.isIE) {
    x = document.documentElement.scrollLeft + document.body.scrollLeft;
    y = document.documentElement.scrollTop + document.body.scrollTop;
  }
  if (browser.isNS) {
    x = window.scrollX;
    y = window.scrollY;
  }
  
	var popup = $('pop');
	
	popup.style.marginTop = startmargin + y + 'px';
	popup.style.marginLeft = startmargin + x + 'px';
	
	popup.className = 'loading';
	popup.style.display = '';
	popup.innerHTML = '<div class="close"><a href="javascript: closePop();">Close [X]</a></div>';
	var xmlHttp = ajaxLoader();
	  xmlHttp.onreadystatechange=function()
		{
		if(xmlHttp.readyState==4)
		  {
			 popup.className = '';
			 popup.innerHTML += xmlHttp.responseText;
		  }
		}
		
	  xmlHttp.open("GET",url+'&ajax=1',true);
	  xmlHttp.send(null);

}

function closePop(){
	var popup = $('pop');
	popup.className = '';
	popup.style.display = 'none';
	popup.innerHTML = '';
}

function ajaxLoader(){
var xmlHttp;

try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    try
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    catch (e)
      {
      alert("Your browser does not support AJAX!");
      return false;
      }
    }
  }
  return xmlHttp;
}

function showCustomIcon(obj){
	var customicon = parseInt(obj.options[obj.selectedIndex].getAttribute('alt'));
	var iconfield = $('custom_icon');
	if(isNaN(customicon) || customicon == 0){
		iconfield.disabled=true;
	}else{
		iconfield.disabled=false;
	}
}