function detect_browser()
{
var browser;

// FireFox
if (navigator.userAgent.toLowerCase().indexOf("firefox") > -1)
{
var start_pos = (navigator.userAgent.toLowerCase().indexOf("firefox")+8);
var end_pos = start_pos+1;
browser = "firefox" + navigator.userAgent.substring(start_pos, end_pos);
}

// Opera
else if (navigator.userAgent.toLowerCase().indexOf("opera") > -1)
{
var start_pos = (navigator.userAgent.toLowerCase().indexOf("opera")+6);
var end_pos = start_pos+4;
browser = "opera";
}

return browser;
}


function Toggle(item) {
   obj=document.getElementById(item);
   visible=(obj.style.display!="none")
   key=document.getElementById("x" + item);
   if (visible) {
     obj.style.display="none";
     key.innerHTML="<img src='/images/style/submenu/menu-closed.gif' width='9' height='9' hspace='0' vspace='0' border='0'>";
   } else {
      obj.style.display="block";
      key.innerHTML="<img src='/images/style/submenu/menu-open.gif' width='9' height='9' hspace='0' vspace='0' border='0'>";
   }
}

function Toggle_menu_item(item) { //nové menu
   var parent=item.parentNode;
   switch(parent.className){
	   case "opened": parent.className = "closed";
	                  item  .className = "item-name closed";
	   				  break;
	   case "closed": parent.className = "opened";
	                  item  .className = "item-name opened";
	   				  break;
	   }
}

function detect_browser2(classname)
{
	var browser;
	
	// Microsoft IE
	if(navigator.userAgent.toLowerCase().indexOf("msie") > -1)
	{
		browser = "block";
	}
	
	else
	{
		browser = classname;
	}
	
	return browser;
}

function Toggle_class(item) {
   obj=getElementsByClass(item,null,null);
   for (i = 0; i < obj.length; i++)
   {
	   visible=(obj[i].style.display!="none")
	   if (visible) {
		 obj[i].style.display="none";
	   } else {
		  obj[i].style.display=detect_browser2('table-cell');
	   }
   }
}

function Toggle_class_new(item,classname) {
   obj=getElementsByClass(item,null,null);
   for (i = 0; i < obj.length; i++)
   {
	   visible=(obj[i].style.display!="none")
	   if (visible) {
		 obj[i].style.display="none";
	   } else {
		  /*obj[i].style.display="table-row-group";*/
		  obj[i].style.display=detect_browser2(classname);
	   }
   }
}

function Toggle_class2(item) {
   obj=getElementsByClass(item,null,null);
   for (i = 0; i < obj.length; i++)
   {
		 obj[i].style.display="none";
   }
}


function getElementsByClass(searchClass,node,tag) {

        var classElements = new Array();
        if (node == null)
                node = document;
        if (tag == null)
                tag = '*';
        var els = node.getElementsByTagName(tag);
        var elsLen = els.length;
        var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
        var j = 0;
        for (i = 0; i < elsLen; i++) {
                if (pattern.test(els[i].className) ) {
                        classElements[j] = els[i];
                        j++;
                }
        }
        return classElements;
}

function Add_active_by_id(item) {
   obj=document.getElementById(item);
   obj.className="active";
}

function Clear_classNames(langs) {
	var elsLen = langs.length;
	for (i = 0; i < elsLen; i++) {
		 obj=document.getElementById('s'+i);
   		 obj.className="deactive";
	}

}

function mysqlDatetimeToDate(datetime) {
    //function parses mysql datetime string and returns javascript Date object
    //input has to be in this format: 2007-06-05 15:26:02
    var regex=/^([0-9]{2,4})-([0-1][0-9])-([0-3][0-9]) (?:([0-2][0-9]):([0-5][0-9]):([0-5][0-9]))?$/;
    var parts=datetime.replace(regex,"$1 $2 $3 $4 $5 $6").split(' ');
    return new Date(parts[0],parts[1]-1,parts[2],parts[3],parts[4],parts[5]);
}

function filter(phrase, _id){
	var words = phrase.value.toLowerCase().split(" ");
	var table = document.getElementById(_id);
	var ele;
	for (var r = 1; r < table.rows.length; r++){
		ele = table.rows[r].innerHTML.replace(/<[^>]+>/g,"");
	        var displayStyle = 'none';
	        for (var i = 0; i < words.length; i++) {
		    if (ele.toLowerCase().indexOf(words[i])>=0)
			displayStyle = '';
		    else {
			displayStyle = 'none';
			break;
		    }
	        }
		table.rows[r].style.display = displayStyle;
	}
}