function $(id)
	{
		return document.getElementById(id);
	}
	
	/*
	*	funkcja pobierajaca dodatkowe skrypty, normalizuje podane sciezki i zalacza tylko jesli jeszcze nie jest zalaczony
	*/
	function include(src)
	{
	  if(typeof __includedFiles == 'undefined'){
	  	__includedFiles = new Array();
	  }
	  
	  var tempSrc = src;
	  
	  var protocol = /^http[s]?:\/\//;
	  if(!protocol.test(tempSrc)){
		if(tempSrc.charAt(0) == '/'){
			tempSrc = document.location.protocol+'//'+document.location.host+tempSrc;
		}
		else {
			tempSrc = document.location.href.replace(document.location.hash,'');
			tempSrc = 'http://www.gbox.eu/zdjecia/aaa/';
			tempSrc = tempSrc.replace(/(.*)\/.*/,'$1/')+src;
			var k = 0;
			while((k = tempSrc.indexOf('../')) != -1){
				var s = 0;
				var c = 0;
				while((s = tempSrc.indexOf('/',c)) < k-1){
					c = s+1;
				}
				tempSrc = tempSrc.substring(0,c)+tempSrc.substring(k+3,tempSrc.length);
			}
		}
	  }
	  
	  if(__includedFiles.indexOf(tempSrc) != -1){
	  	return false;
	  }
	  
	  __includedFiles.push(tempSrc);
	  
	  document.write('<script type="text/javascript" src="'+src+'"></script>');
	  
	  return true;
	}
	
	function isFunc(v)
	{
		return typeof v == 'function';
	}
	
	
	if(!Array.indexOf){
	    Array.prototype.indexOf = function(obj){
	        for(var i=0; i<this.length; i++){
	            if(this[i]==obj){
	                return i;
	            }
	        }
	        return -1;
	    }
	}
	
	function getRealHeight(obj)
	{
		paddingTop = getStyle(obj,'paddingTop','int');
		paddingBottom = getStyle(obj,'paddingBottom','int');
			
		if(navigator.userAgent.indexOf('MSIE') != -1){
			realHeight = obj.offsetHeight;

			//specjalnie dla IE trzeba odjac jeszcze szerokosc borderow..
			realHeight -= getStyle(obj,'borderTopWidth','int');
			realHeight -= getStyle(obj,'borderBottomWidth','int');
		}
		else if(navigator.userAgent.indexOf('Firefox') != -1) {
			realHeight = obj.offsetHeight;
		}
		else 
			realHeight = obj.clientHeight;
		
		return (realHeight-paddingTop-paddingBottom);
	}
	
	function getDims(obj)
	{
		var ret = {width:0,height:0,left:0,top:0}; 
		ret.width = getRealWidth(obj);
		ret.height = getRealHeight(obj);
	
		ret.left = getAbsoluteLeft(obj);
		ret.top = getAbsoluteTop(obj);

		return ret;
	}
	
	function getRealWidth(obj)
	{
		paddingLeft = getStyle(obj,'paddingLeft','int');
		paddingRight = getStyle(obj,'paddingRight','int');
			
		if(navigator.userAgent.indexOf('MSIE') != -1){
			realWidth = obj.offsetWidth;

			//specjalnie dla IE trzeba odjac jeszcze szerokosc borderow..
			realWidth -= getStyle(obj,'borderLeftWidth','int');
			realWidth -= getStyle(obj,'borderRightWidth','int');
		}
		else 
			realWidth = obj.clientWidth;
		
		return (realWidth-paddingLeft-paddingRight);
	}
	
	function getStyle(obj,s,type)
	{
		if(!not(obj.style[s]))
			r = obj.style[s];
		else
			r = false;
		
		if(!not(type)){
			if(type = 'int'){
				r = parseInt(r);
				if(isNaN(r)) {
					r = 0
				};
				
				return r;
			}
		}
		return r;
	}
	
	function not(v)
	{
		if(typeof v == 'undefined'){
			return true;
		}

		if(typeof v == 'null'){
			return true;
		}

		if(typeof v == null){
			return true;
		}

		return false;
	}
	
	function setStyle(obj,s,v,fix,debug)
	{
		if(not(debug)){
			var debug = false;
		}
		
		if(!not(fix)){
			v += fix;
		}
		
		if(navigator.userAgent.indexOf('MSIE') != -1){
			switch(s){		
				case 'opacity' : 
					v = 'alpha(opacity='+(v * 100)+')';
					s = 'filter';
					break;

				case 'cssFloat' :
					s = 'styleFloat';
					break;
				
				case 'minHeight' :
					//s = 'height';
					break;
			}
		}
		
		if(debug){
			alert(obj+" / "+s+" = "+v);
		}
		
		obj.style[s] = v;
		return obj.style[s];
	}
	
	function setClass(obj,tempClassName,add)
	{
		if(not(add)){
			var add = false;
		}
		
		if(not(obj)){
			return false;
		}
		
		if(obtainClass(obj,tempClassName))
			return obj.className;
		
		if(add){
			obj.className += ' '+tempClassName;
		}
		else {
			obj.className = tempClassName;
		}
		
		return obj.className;
	}
	
	function unsetClass(obj,tempClassName)
	{
		eval('var regs = /(^|\\s)'+tempClassName+'($|\\s)/i');
		obj.className = obj.className.replace(regs,'$1$2');
		obj.className = obj.className.replace(/\s\s/,' ')
	}
	
	function obtainClass(obj,tempClassName)
	{
		if(not(obj)){
			return false;
		}
		
		if(not(tempClassName)){
			var temp = new Array();
			temp = obj.className.split(' ');
			return temp;
		}
		else {
			eval('var regs = /(^|\\s)'+tempClassName+'($|\\s)/i');
			return regs.test(obj.className);
		}
	}
	
	function getAbsoluteTop (obiekt,zeroClass)
	{
		// zerujemy zmienne
		var pos = 0; 
		var oParent = obiekt;
		var rel = '';
		
		// nie ma
		if (!oParent) 
			return pos;
		// petla
		do
		{			
			// ustawiamy pozycje
			pos += oParent.offsetTop;
			// pobieramy parentka
			oParent = oParent.offsetParent;

			if(!not(zeroClass) && obtainClass(oParent,zeroClass)){
				return pos;
			}
		}
		while (oParent.tagName.toLowerCase() != 'body' && oParent.tagName.toLowerCase() != 'html');		
		
		pos += oParent.offsetTop;
		
		// zwracamy pos		
		return pos;
	}
	
	function getAbsoluteLeft (obiekt,zeroClass)
	{
		// zerujemy zmienne
		var pos = 0; 
		var oParent = obiekt;
		
		// nie ma
		if (!oParent) 
			return pos;
		// petla
		do
		{
			// ustawiamy pozycje
			pos += oParent.offsetLeft;
			// pobieramy parentka
			oParent = oParent.offsetParent;

			if(!not(zeroClass) && obtainClass(oParent,zeroClass)){
				return pos;
			}
		}
		while (oParent.tagName.toLowerCase() != 'body' && oParent.tagName.toLowerCase() != 'html');
		
		pos += oParent.offsetLeft;
		// zwracamy pos
		return pos;
	}
	
	function objectDebug(obj,field)
	{
		for(var i in obj){
			if(field){
				if((i.toUpperCase()).indexOf(field.toUpperCase())==-1){
					continue;
				}
			}
			
			if(!confirm(i+": "+obj[i])){
				return false;
			}		
		}
	}
	
	function addListener(element, event, listener, bubble) 
	{
		if(element.addEventListener) {
			if(not(bubble)) {
				var bubble = false;
			}
			element.addEventListener(event, listener, bubble);
		}
		else if(this.attachEvent) {
			element.attachEvent("on" + event, listener);
		}
	}
	
	function removeListener(element, event)
	{
		eval('element.on'+event+' = null;');
		if(element.removeEventListener) {
			element.removeEventListener(event,function() {},false);
		}
		else if(element.detachEvent) {
			element.detachEvent("on"+event);
		}
	}
	
	function getCssRule(obj, rule)
	{
		alert('css1');
		var nodeName = obj.nodeName;
		var classes = obtainClass(obj);
		var ret = '';
		if(typeof classes == 'string'){
			var temp = new Array();
			temp[0] = classes;
			classes = temp;
		}
		alert('css2');
		if (document.styleSheets[0].cssRules){
			alert('css2.1');
			for(var i = 0; i < document.styleSheets.length; i++){
				theRules = document.styleSheets[i].cssRules;
			}
		}
		else if (document.styleSheets[0].rules){
			alert('css2.2');
			for(var i = 0; i < document.styleSheets.length; i++){
				theRules = document.styleSheets[i].rules;
			}
		}
		alert('css3');
		for(var i = 0; i < theRules.length; i++){
			eval('var regs = /'+nodeName+'($|,)/');
			if(regs.test(theRules[i].selectorText)){
				if(theRules[i].style[rule]){
					ret = theRules[i].style[rule];
				}
			}
			
			for(var j =0; j<classes.length; j++){
				eval('var regs = /\.'+classes[j]+'($|,)/');
				if(regs.test(theRules[i].selectorText)){
					if(theRules[i].style[rule]){
						ret = theRules[i].style[rule];
						alert(theRules[i].selectorText+" => "+theRules[i].style[rule]);
					}
				}
			}
		}
		
		return ret;
	}
	
	function cancelBubble(e)
	{
		if(!e){
			window.event.cancelBubble = true;
		}
		else {
			e.stopPropagation();
		}
	}
	
	function getParentElement(obj,element,className)
	{
		var temp = obj;
		
		if(not(className)){
			var className = '';
		}
		
		while(temp = temp.parentNode){
			if(temp.nodeName.toUpperCase() == element.toUpperCase()){
				if(!className){
					return temp;
				}
				
				if(temp.className.toUpperCase() == className.toUpperCase()){
					return temp;
				}
			}
		}
		return false;
	}
	
	/**
	 * usuwa wszystkich podomków
	 * 
	 * @param {Object} obj node dla którego należy usunąć potomków
	 */
	function removeChildren(obj){
		while(obj.childNodes.length) obj.removeChild(obj.childNodes[0]);
	}

	// skopiowane beszczelnie z django-admin	
	// quickElement(tagType, parentReference, textInChildNode, [, attribute, attributeValue ...]);
	function quickElement() {
    var obj = document.createElement(arguments[0]);
    if (arguments[2] != '' && arguments[2] != null) {
        var textNode = document.createTextNode(arguments[2]);
        obj.appendChild(textNode);
    }
    var len = arguments.length;
    for (var i = 3; i < len; i += 2) {
        obj.setAttribute(arguments[i], arguments[i+1]);
    }
    arguments[1].appendChild(obj);
    return obj;
}

function wheel(event,callback){
    var delta = 0;
    if (!event) /* For IE. */
            event = window.event;
    if (event.wheelDelta) { /* IE/Opera. */
            delta = event.wheelDelta/120;
            /** In Opera 9, delta differs in sign as compared to IE.
             */
            if (window.opera)
                    delta = -delta;
    } else if (event.detail) { /** Mozilla case. */
            /** In Mozilla, sign of delta is different than in IE.
             * Also, delta is multiple of 3.
             */
            delta = -event.detail/3;
    }

    if (delta)
            callback(delta);

    if (event.preventDefault)
            event.preventDefault();
            
	event.returnValue = false;
}

	function strip_tags(str)
	{
		return str.replace(/(<([^>]+)>)/ig,"");
	}

	// skopiowane beszczelnie z django-admin (a nastepnie troche zmienione)
	// quickElement(tagType, parentReference, textInChildNode, [, attribute, attributeValue ...]);
	function quickElement() {
	    var obj = document.createElement(arguments[0]);
	    if (arguments[2] != '' && arguments[2] != null) {
	        var textNode = document.createTextNode(arguments[2]);
	        obj.appendChild(textNode);
	    }
	    var len = arguments.length;
	    for (var i = 3; i < len; i += 2) {
	        obj.setAttribute(arguments[i], arguments[i+1]);
	    }
	
	    if(arguments[1])
		    arguments[1].appendChild(obj);
		    
	    return obj;
	}
	
	//quickElement(tagType, className, textInChildNode, [, attribute, attributeValue ...]);
	function quickerElement() {
	    var obj = document.createElement(arguments[0]);
	    if (arguments[2] != '' && arguments[2] != null) {
	        var textNode = document.createTextNode(arguments[2]);
	        obj.appendChild(textNode);
	    }
	    var len = arguments.length;
	    for (var i = 3; i < len; i += 2) {
	        obj.setAttribute(arguments[i], arguments[i+1]);
	    }
	
	    if(arguments[1])
		    setClass(obj,arguments[1]);
		    
	    return obj;
	}