function filebrowser_preloader() {
	el=$('filebrowser_preloader').style;
	el.display=(el.display == 'block')?'none':'block';

}



function addSearchEngine($cesta,$title,$desc) {
  if ((typeof window.sidebar == "object") &&
      (typeof window.sidebar.addSearchEngine == "function")) {

    window.sidebar.addSearchEngine(
      $cesta+"/search-ff.src",
      //$cesta+"/articles/search_addon",
      $cesta+"/css/fastest/icons/favicon.ico",
      $title,
      $desc);

  } else
    alert("Váš prohlížeč nepodporuje tuto funkci. Zkuste Mozillu.");

}




function getHighestIndex(){				
		var allElems = document.getElementsByTagName?document.getElementsByTagName("*"): document.all; 
		var maxZIndex = 0;
		for(var i=0;i<allElems.length;i++) {
			var elem = allElems[i];
			var cStyle = null;
			if (elem.currentStyle) {cStyle = elem.currentStyle;
			} else if (document.defaultView && document.defaultView.getComputedStyle){
				cStyle = document.defaultView.getComputedStyle(elem,"");
			}
			var sNum;
			if (cStyle) {
				sNum = Number(cStyle.zIndex);
			} else {
				sNum = Number(elem.style.zIndex);
			}
			if (!isNaN(sNum)) {
				maxZIndex = Math.max(maxZIndex,sNum);
			}
		}
		return maxZIndex;
} 

Element.implement({
	inputLimit: function(){
		if (this.hasClass('float')){
			this.addEvent('keypress',function(e){
				var event = new Event(e); 
				var allow_key = ['1','2','3','4','5','6','7','8','9','0',',','backspace','left','right','tab','f5'];	
				if (allow_key.indexOf(event.key) != -1) 
					return true; 
				else 
					return false;			
			});
		} else if (this.hasClass('integer')){
			this.addEvent('keypress',function(e){
				var event = new Event(e); 
				var allow_key = ['1','2','3','4','5','6','7','8','9','0','backspace','left','right','tab','f5'];	
				if (allow_key.indexOf(event.key) != -1) 
					return true; 
				else 
					return false;			
			});
		}
	},
	
	ajaxLoad: function(url, children){
		var empty_value = '--- Zvolte hodnotu ---'
		this.addEvent('change', function(){
			new Request.JSON({
				url: url + this.value,
				onComplete: (function(json){
					children.each(function(obj){
						$(obj).empty();
						new Element('option', {title:empty_value, value:''}).setHTML(empty_value).inject($(obj));
					});
					child = children[0];
					$each(json, function(value, id){
						new Element('option', {title:value, value:id}).setHTML(value).inject($(child));
					}, this);
				}).bind(this)
			}).send();
		});
	},
	
	getOptionText: function(){
		return this.options[this.selectedIndex].getHTML();
	}
});
String.implement({
	camelCase2: function(){
		return this.replace(/_\D/g, function(match){
			return match.charAt(1).toUpperCase();
		});
	}
});

function tisk(){
window.print();
return false;
}

function button_preloader(id){
		id.addClass('button_preloader');
		id.setProperty('disabled');
}

function button_preloader_disable(id){
		id.removeClass('button_preloader');
		id.removeProperty('disabled');
}

// zmena pisma ve clankach
function init_font_changer(){
	Cookie.get("fontType");
	switchFont(Cookie.get("fontType"));

	if ($('switch_f1'))$('switch_f1').addEvent('click',function(e){new Event(e).stop();switchFont(1);setFontSize(1)})
	if ($('switch_f2'))$('switch_f2').addEvent('click',function(e){new Event(e).stop();switchFont(2);setFontSize(2)})
	if ($('switch_f3'))$('switch_f3').addEvent('click',function(e){new Event(e).stop();switchFont(3);setFontSize(3)})



	function switchFont(typ)
	{
		if (typ==1){
		
		$('obal').getElements('.article_text').removeClass('large_font').addClass('small_font');
		$('obal').getElements('.article_anotace').removeClass('large_font').addClass('small_font');				
		$('obal').getElements('.f1').addClass('active');				
		$('obal').getElements('.f2').removeClass('active');				
		$('obal').getElements('.f3').removeClass('active');				
		}
		
		if (typ==2){
		$('obal').getElements('.article_text').removeClass('small_font').removeClass('large_font');				
		$('obal').getElements('.article_anotace').removeClass('small_font').removeClass('large_font');				
		$('obal').getElements('.f1').removeClass('active');				
		$('obal').getElements('.f2').addClass('active');				
		$('obal').getElements('.f3').removeClass('active');				
		}

		if (typ==3){
		$('obal').getElements('.article_text').removeClass('small_font').addClass('large_font');
		$('obal').getElements('.article_anotace').removeClass('small_font').addClass('large_font');				
		$('obal').getElements('.f1').removeClass('active');				
		$('obal').getElements('.f2').removeClass('active');				
		$('obal').getElements('.f3').addClass('active');				
		}
		

	  }
	function setFontSize(typ){
		Cookie.remove('fontType');
		var myCookie  =  Cookie.set('fontType', typ,{path: '/'});

	}
}