var ie=document.all
var ns6=document.getElementById&&!document.all

function ietruebody(){
return (document.compatMode && document.compatMode!="BackCompat" && !window.opera)? document.documentElement : document.body
}

function enlarge(which, e, position, imgwidth, imgheight){
if (ie||ns6){
crossobj=document.getElementById? document.getElementById("showimage") : document.all.showimage
if (position=="center"){
pgyoffset=ns6? parseInt(pageYOffset) : parseInt(ietruebody().scrollTop)
horzpos=ns6? pageXOffset+window.innerWidth/2-imgwidth/2 : ietruebody().scrollLeft+ietruebody().clientWidth/2-imgwidth/2
vertpos=ns6? pgyoffset+window.innerHeight/2-imgheight/2 : pgyoffset+ietruebody().clientHeight/2-imgheight/2
if (window.opera && window.innerHeight) //compensate for Opera toolbar
vertpos=pgyoffset+window.innerHeight/2-imgheight/2
vertpos=Math.max(pgyoffset, vertpos)
}
else{
var horzpos=ns6? pageXOffset+e.clientX : ietruebody().scrollLeft+event.clientX
var vertpos=ns6? pageYOffset+e.clientY : ietruebody().scrollTop+event.clientY
}
crossobj.style.left=horzpos+"px"
crossobj.style.top=vertpos+"px"

crossobj.innerHTML='<div align="right" id="dragbar"><span id="closetext" onClick="closepreview()">BEZÁRÁS</span> </div><img src="'+which+'">'
crossobj.style.visibility="visible"
return false
}
else //if NOT IE 4+ or NS 6+, simply display image in full browser window
return true
}

function closepreview(){
crossobj.style.visibility="hidden"
}

function drag_drop(e){
if (ie&&dragapproved){
crossobj.style.left=tempx+event.clientX-offsetx+"px"
crossobj.style.top=tempy+event.clientY-offsety+"px"
}
else if (ns6&&dragapproved){
crossobj.style.left=tempx+e.clientX-offsetx+"px"
crossobj.style.top=tempy+e.clientY-offsety+"px"
}
return false
}

function initializedrag(e){
if (ie&&event.srcElement.id=="dragbar"||ns6&&e.target.id=="dragbar"){
offsetx=ie? event.clientX : e.clientX
offsety=ie? event.clientY : e.clientY

tempx=parseInt(crossobj.style.left)
tempy=parseInt(crossobj.style.top)

dragapproved=true
document.onmousemove=drag_drop
}
}

document.onmousedown=initializedrag
document.onmouseup=new Function("dragapproved=false")

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 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];}
}

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version;
var version,total,thestring;
		
		function DetectBrowser()
 {

   if (checkIt('konqueror'))
    {
      browser = "Konqueror";
      OS = "Linux";
    } else if (checkIt('safari')) browser = "Safari"
      else if (checkIt('omniweb')) browser = "OmniWeb"
      else if (checkIt('opera')) browser = "Opera"
      else if (checkIt('webtv')) browser = "WebTV";
      else if (checkIt('icab')) browser = "iCab"
      else if (checkIt('msie')) browser = "Internet Explorer"
      else 
       if (!checkIt('compatible'))
        {
          browser = "Netscape Navigator"
	  version = detect.charAt(8);
        }
         else 
        {
          browser = "An unknown browser";
        }

   if (!version) version = detect.charAt(place + thestring.length);
   if (!OS)
    {
      if (checkIt('linux')) OS = "Linux";
	else if (checkIt('x11')) OS = "Unix";
	else if (checkIt('mac')) OS = "Mac"
	else if (checkIt('win')) OS = "Windows"
	else OS="an unknown operating system";
    }
 }

function checkIt(string)
 {
   place = detect.indexOf(string) + 1;
   thestring = string;
   return place
 }
 		
function openWindow(link,name,settings)
 {
  DetectBrowser();
   var sw=screen.width;
   var hw=screen.height;
   var win_w=800;
   var win_h=600;
   var settings="scrollbars=yes,resizable,toolbar,width="+win_w+",height="+win_h+",";
   if (hw<=600) 
    {
      var left_top_x=(sw-win_w)/2-5; 
      // the 5 is due to the margins of the window
      var left_top_y=(hw-win_h)/2-28;
    } else
    {
      var left_top_x=(sw-win_w)/2; 
      var left_top_y=(hw-win_h)/2;
    }
   if (browser=="Netscape Navigator")
    { settings+="screenX="+left_top_x+",screenY="+left_top_y; } else
    { settings+="left="+left_top_x+",top="+left_top_y; } 

   x=window.open(link,name,settings);
 }

function openSmallWindow(link,name,settings)
 {
  DetectBrowser();
   var sw=screen.width;
   var hw=screen.height;
   var win_w=382;
   var win_h=310;
   var settings="scrollbars=yes,resizable,width="+win_w+",height="+win_h+",";
   if (hw<=600) 
    {
      var left_top_x=(sw-win_w)/2-5; 
      // the 5 is due to the margins of the window
      var left_top_y=(hw-win_h)/2-28;
    } else
    {
      var left_top_x=(sw-win_w)/2; 
      var left_top_y=(hw-win_h)/2;
    }
   if (browser=="Netscape Navigator")
    { settings+="screenX="+left_top_x+",screenY="+left_top_y; } else
    { settings+="left="+left_top_x+",top="+left_top_y; } 

   x=window.open(link,name,settings);
 }
 
 function focused(obj)
{
    if (obj.value == obj.defaultValue)
    {
        obj.value = "";
    }
}

function blurred(obj)
{
    if (obj.value == "")
    {
        obj.value = obj.defaultValue;
    }
}