var imgList = new Object();
var imgsLoaded = false;
var nRe = /(.+)_ro_/;

function rollover() {
	var sRe = /[\/]{2}[^\/]+[\/]{1}(.+)[\/]{1}(.+)([\.]{1}[\w]{3})$/;

	if(document.images.length) {
		for(var x=0; x<document.images.length; x++) {

			if(document.images[x].id && nRe.test(document.images[x].id)) {
				var iD = '/' + sRe.exec(document.images[x].src)[1] + '/';
				var iN = nRe.exec(document.images[x].id)[1];
				var iS = sRe.exec(document.images[x].src)[2];
				var iX = sRe.exec(document.images[x].src)[3];

				imgList[iN] = new Image();
				imgList[iN].src = iD + iS + iX;

				imgList[iN + '_on'] = new Image();
				imgList[iN + '_on'].src = iD + iS + '_on' + iX;
			}
		}

		imgsLoaded = true;

		document.onmouseover = mOver;
		document.onmouseout = mOut;
	}
}

function mOver(e) {
	if(e && e.target) var se = e.target;
	else if(event.srcElement) var se = event.srcElement;

	if(imgsLoaded && se.id && nRe.test(se.id)) {
		var img = nRe.exec(se.id)[1];
		se.src = imgList[img + '_on'].src;
	}
}

function mOut(e) {
	if(e && e.target) var se = e.target;
	else if(event.srcElement) var se = event.srcElement;

	if(imgsLoaded && se.id && nRe.test(se.id)) {
		var img = nRe.exec(se.id)[1];
		se.src = imgList[img].src;
	}
}


function ukryj(id) {
  var jeden=document.getElementById(id);
  if (jeden==null)
      return;
  var jedenStyle = jeden.style;
  jedenStyle.display = (jedenStyle.display == "none") ? "" : "none";
  
  if(document.images.Gif1.src.search("red") == -1) {
  	var gifSrc = (jedenStyle.display == "none") ? "../img/but_box1.gif" : "../img/but_box.gif";
  } else {
  	var gifSrc = (jedenStyle.display == "none") ? "../img/but_box1_red.gif" : "../img/but_box_red.gif";
  }
  
  switch(id)
  { case "a1": document.images.Gif1.src=gifSrc; break;
    case "a2": document.images.Gif2.src=gifSrc; break;
    case "a3": document.images.Gif3.src=gifSrc; break;
    case "a4": document.images.Gif4.src=gifSrc; break;
    case "a5": document.images.Gif5.src=gifSrc; break;
    case "a6": document.images.Gif6.src=gifSrc; break;
    case "a7": document.images.Gif7.src=gifSrc; break;
    case "a8": document.images.Gif8.src=gifSrc; break;
    case "a9": document.images.Gif9.src=gifSrc; break;
    case "a10": document.images.Gif10.src=gifSrc; break;
  }
}

var tabs = new Array('zakladka_1', 'zakladka_2', 'zakladka_3');
 
function change_class(tab)
{
   for (i = 0; i < tabs.length; i++)
   {
       if (document.getElementById(tabs[i]))
       {
           document.getElementById(tabs[i]).style.display = 'none';
           document.getElementById('link_' + tabs[i]).className = 'zakladki';
         
       }    
   }
   document.getElementById(tab).style.display = 'block';
   document.getElementById('link_' + tab).className = 'zakladki_light';

  
}