//animate the opening of the branch (span.grower jQueryElement)
function openBranch(jQueryElement, noAnimation, isclick) {

		if(noAnimation && isclick){
			//jQueryElement.parent().parent().find('ul').hide();
			jQueryElement.parent().parent().find('.open').addClass('close').removeClass('open');
		}
		else{
			if(isclick)
				jQueryElement.parent().parent().find('ul').slideUp();
		}
		if(isclick)
			jQueryElement.parent().parent().find('span').addClass('close').removeClass('open');

		jQueryElement.addClass('open').removeClass('close');
		jQueryElement.parent().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');
	jQueryElement.parent().find('span').addClass('close').removeClass('open');

	jQueryElement.parent().addClass('close').removeClass('open');

	if(noAnimation)
		jQueryElement.parent().find('ul').hide();
	else
		jQueryElement.parent().find('ul').slideUp();
}

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

//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 > li').addClass('open');
		$('ul.tree.dhtml ul 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'))
					openBranch($(this).prev().prev(), true, false);
			});
			//toggleBranch( $('ul.tree.dhtml .selected').prev(), true, false);
		
		//add a fonction on clicks on growers
		$('ul.tree.dhtml span.grower').click(function(){
			toggleBranch($(this), true, true);
		});
		//mark this 'ul.tree' elements as already 'dynamized'
		$('ul.tree.dhtml').addClass('dynamized');

		$('ul.tree.dhtml').removeClass('dhtml');
	}
});