function MM_findObj(n, d) { //v4.0
  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 && document.getElementById) x=document.getElementById(n); return x;
}

function MM_showHideLayers() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

function invertLayerDisplay()
{
    var obj, i;
    for (i=0; i<arguments.length; i++) {
    	obj = MM_findObj(arguments[i]);
    	if (obj) obj.style.display = obj.style.display == "" ? "none" : "";
	}
}

function displayLayer(name, display)
{
	var obj=MM_findObj(name);
	if (obj) obj.style.display = display ? '' : 'none';
}

var popWin;

function openPopWindow(src, options, name)
{
	var x = arguments[3];	
	var y = arguments[4];	

	if (x) options+= ",left="+x+",screenX="+x;
	if (y) options+= ",top="+y+",screenY="+y;

	if (!(src.indexOf("http")==0 || src.indexOf("/")==0)) {
		src = _base+src;
	}

	if (src.search(/\.(jpg|gif|jpeg|png)$/ig) != -1) {
		popImage(src, '','',  x, y);
		return;
	}
	
	if (popWin) popWin.close();
	popWin=window.open(src, name, options);
	popWin.focus();
}

var picture = null;
function popImage(img_path, img_alt, img_author, img_width, img_height)
{
  var html, img_src;

  if ( img_path.search( "http:" ) == 0 )
  	img_src = img_path;
  else
    img_src = _base+img_path;
  
  l = 10;
  t = 10;
  var screen_width = img_width +30;
  var screen_height = img_height + 30;
  
  if ( picture!=null && !picture.closed) {
  	picture.close();
	picture = null;
  }
  
  var title = img_alt ? img_alt : "Nuotrauka";
  
  html = "<html><head><title>"+title+"</title><link href='"+_base+"css/core.css' rel='stylesheet' type='text/css'></head><body leftmargin='0' topmargin='7'>";
  html+= "<table width='100%' cellpadding='5' cellspacing='0' border='0' align='center' height='100%'>";
  html+= "<tr><td width='100%' align='center' valign='middle' height='100%'><a href='#' onclick='window.close();return false;'><img src='"+img_src;
  html+= "' border='1' alt='"+img_alt+"' style='border-color:#000000;'></a>";
  if (img_author)
    html+= "<br><small>Author: "+img_author+"</small>";
  html+= "</td></tr></table></body></html>";

  picture = window.open('', 'picture', 'width='+screen_width+',height='+screen_height+',status=no,location=no,resizable=yes,scrollbars=no,top='+t+',left='+l);
  picture.document.write(html);
  picture.focus();
  return;
}

function emailCheck (emailStr) {
	var emailPat=/^(.+)@(.+)$/
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	var validChars="\[^\\s" + specialChars + "\]"
	var quotedUser="(\"[^\"]*\")"
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	var atom=validChars + '+'
	var word="(" + atom + "|" + quotedUser + ")"
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


	var matchArray=emailStr.match(emailPat)
	if (matchArray==null) {
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]

	if (user.match(userPat)==null) {
		return false
	}

	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
		  for (var i=1;i<=4;i++) {
			if (IPArray[i]>255) {
				return false
			}
		}
		return true
	}

	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		return false
	}

	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 ||
		domArr[domArr.length-1].length>4) {
	   return false
	}

	if (len<2) {
	   return false
	}

	return true;
}
