function validateEmail(email)
{
  if ((email == '') || (email.indexOf('@') < 1) || (email.indexOf('@') == email.length-1))
    return 0;
  else
    return 1;
}
function setFormField(form,field,value) {
  document.forms[form].elements[field].value = value;
}
function setAndSubmitForm(form,field,value) {
  document.forms[form].elements[field].value = value;
  document.forms[form].submit();
}
function setAndSubmitAltForm(form,action,field,value) {
  document.forms[form].action = action;
  document.forms[form].elements[field].value = value;
  document.forms[form].submit();
}
function submitForm(form) {
  document.forms[form].submit();
}

function setBgColor(elem,color) {
  document.getElementById(elem).style.backgroundColor=color;
}

function setFgColor(elem,color) {
  document.getElementById(elem).style.color=color;
}

function toggleVisibility(elem) {
  if (document.getElementById(elem).style.visibility != 'visible') {
    document.getElementById(elem).style.visibility = 'visible';
    document.getElementById(elem).style.display = 'block';
  } else {
    document.getElementById(elem).style.visibility = 'hidden';
    document.getElementById(elem).style.display = 'none';
  }
}

function setImage(image,src) {
  e=document.getElementById(image);
  if (e)
    e.src = src;
}

function toggleImage(image,srcOn,srcOff) {
  var src = document.getElementById(image).src;
  document.getElementById(image).src = srcOff;
  if (src == document.getElementById(image).src) {
    document.getElementById(image).src = srcOn;
  }
}

function trim(napis) {
  while (napis.charAt(0)==' ')
    napis = napis.substring(1,napis.length);
  while (napis.charAt(napis.length-1)==' ')
    napis = napis.substring(0,napis.length-1);
  return napis;
}

var win= null;
function NewWindow(mypage,myname,w,h,scroll){
  var winl = (screen.width-w)/2;
  var wint = (screen.height-h)/2;
  var settings  ='height='+h+',';
  settings +='width='+w+',';
  settings +='top='+wint+',';
  settings +='left='+winl+',';
  settings +='scrollbars='+scroll+',';
  settings +='resizable=no';
  win=window.open(mypage,myname,settings);
  if(parseInt(navigator.appVersion) >= 4){win.window.focus();}
}

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_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_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 findObj(n, d)
{
     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=findObj(n,d.layers[i].document);
     if(!x && d.getElementById)
          x=d.getElementById(n);
     return x;
}

function showImage(img) {
  var winI=null;
  var settings='';
  settings +='scrollbars=yes,';
  settings +='resizable=yes';
  winI=window.open('Obraz','Obraz',settings);
  winI.document.write('<HTML><BODY ONCLICK="window.close()" STYLE="margin:0;height:100%;background:no-repeat center center url(');
  winI.document.write(img);
  winI.document.write(')"><div style="text-align:center;color:#c0c0c0;font-family:Tahoma,helvetica;font-size:11px">kliknij aby zamknąć</div></BODY></HTML>');
  winI.document.close();
  if(parseInt(navigator.appVersion) >= 4){winI.window.focus();}
}

function getXmlHttp() {
    var xmlhttp=false;
    /*@cc_on @*/
    /*@if (@_jscript_version >= 5)
    // JScript gives us Conditional compilation, we can cope with old IE versions.
    // and security blocked creation of the objects.
     try {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
     } catch (e) {
      try {
       xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (E) {
       xmlhttp = false;
      }
     }
    @end @*/
    if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
        try {
            xmlhttp = new XMLHttpRequest();
        } catch (e) {
            xmlhttp=false;
        }
    }
    if (!xmlhttp && window.createRequest) {
        try {
            xmlhttp = window.createRequest();
        } catch (e) {
            xmlhttp=false;
        }
    }
    return xmlhttp;
}

function f_filterResults(n_win, n_docel, n_body) {
	var n_result = n_win ? n_win : 0;
	if (n_docel && (!n_result || (n_result > n_docel)))
		n_result = n_docel;
	return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}
function f_clientWidth() {
	return f_filterResults (
		window.innerWidth ? window.innerWidth : 0,
		document.documentElement ? document.documentElement.clientWidth : 0,
		document.body ? document.body.clientWidth : 0
	);
}
function f_clientHeight() {
	return f_filterResults (
		window.innerHeight ? window.innerHeight : 0,
		document.documentElement ? document.documentElement.clientHeight : 0,
		document.body ? document.body.clientHeight : 0
	);
}
function f_scrollLeft() {
	return f_filterResults (
		window.pageXOffset ? window.pageXOffset : 0,
		document.documentElement ? document.documentElement.scrollLeft : 0,
		document.body ? document.body.scrollLeft : 0
	);
}
function f_scrollTop() {
	return f_filterResults (
		window.pageYOffset ? window.pageYOffset : 0,
		document.documentElement ? document.documentElement.scrollTop : 0,
		document.body ? document.body.scrollTop : 0
	);
}

function rateMe(n) {
  var l = window.location.href
  if (l.indexOf('?') >= 0) {
    window.location = l + '&rate=' + n;
  } else {
    window.location = l + '?rate=' + n;
  }
}

function showOnTop(foto) {
  e=document.getElementById('toplayer');
  e.style.height=f_clientHeight()+'px';
  e.style.top=f_scrollTop()+'px';
  i=document.getElementById('topimg');
  i.src=foto;
  e.style.display='block';
  e.style.visibility='visible';
}
