//animate the opening of the branch (span.grower jQueryElement)
function openBranch(jQueryElement, noAnimation) {
	
       // Хак, который позволяет сворачивать другие вкладки
       if (location.href.indexOf('id_')==-1){
        	if(jQueryElement.parent().parent('ul.tree').length==1){
			$('ul.tree > li > ul').hide();
             		$('ul.tree > li > span').addClass('CLOSE').removeClass('OPEN');
                        $('ul.tree > li > ul > li > ul').hide();
                        $('ul.tree > li > ul > li > span').addClass('CLOSE').removeClass('OPEN');
		}
        }

        jQueryElement.parent().parent().addClass('OPEN').removeClass('CLOSE');

		jQueryElement.addClass('OPEN').removeClass('CLOSE');
		if(noAnimation)
			jQueryElement.parent().find('ul:first').show();
		else
			jQueryElement.parent().find('ul:first').slideDown();
		
}
//animate the closing of the branch (span.grower jQueryElement)
function closeBranch(jQueryElement, noAnimation) {
	jQueryElement.addClass('CLOSE').removeClass('OPEN');
	if(noAnimation)
		jQueryElement.parent().find('ul:first').hide();
	else
		jQueryElement.parent().find('ul:first').slideUp();
}

//animate the closing or opening of the branch (ul jQueryElement)
function toggleBranch(jQueryElement, noAnimation) {
        noAnimation=true;	
	if(jQueryElement.hasClass('OPEN'))
		closeBranch(jQueryElement, noAnimation);
	else
		openBranch(jQueryElement, noAnimation);
}

//when the page is loaded...
$(document).ready(function () {
	//to do not execute this script as much as it's called...
	if(!$('ul.tree.dhtml').hasClass('dynamized'))
	{
		//add growers to each ul.tree elements
		$('ul.tree.dhtml ul').prev().before("<span class='grower OPEN'> </span>");
		
		//dynamically add the '.last' class on each last item of a branch
		$('ul.tree.dhtml ul li:last-child, ul.tree.dhtml li:last-child').addClass('last');
		
		//collapse every expanded branch
		
		$('ul.tree.dhtml span.grower.OPEN').addClass('CLOSE').removeClass('OPEN').parent().find('ul:first').hide();  	
		$('ul.tree.dhtml').show();
		
		//open the tree for the selected branch
			$('ul.tree.dhtml .selected').parents().each( function() {
				if ($(this).is('ul'))
					toggleBranch($(this).prev().prev(), true);
			});
			toggleBranch( $('ul.tree.dhtml .selected').prev(), true);
		
		//add a fonction on clicks on growers
		$('ul.tree.dhtml span.grower').click(function(){
			toggleBranch($(this));
		});
		//mark this 'ul.tree' elements as already 'dynamized'
		$('ul.tree.dhtml').addClass('dynamized');

		$('ul.tree.dhtml').removeClass('dhtml');
	}                
        
	// Хак, который позволяет всегда держать открытым последний раздел списка                                                          
	if (location.href.indexOf('id_')==-1){
        	$('ul.tree > li.last > ul').css('display','block');
		$('ul.tree > li.last > span').addClass('OPEN').removeClass('CLOSE');
	}    
});