$(document).ready(function(){
	var treeLis = $('#tree li');
	treeLis
		.prepend('<img src="./img/tree_dot.gif" alt=".">')
		.each(function(){
			//console.log($(this).find('li').length)
			
			if( $(this).find('li').length ){
				//console.log( $(this).children('img') )
				$(this).children('img')
					.attr({ src: "./img/tree_plus.gif", alt: "+" })
					.addClass('withchild')
					.click(function(){
						if($(this).attr('src') == "./img/tree_minus.gif"){$(this).attr({ src: "./img/tree_plus.gif", alt: "+" })}
						else {$(this).attr({ src: "./img/tree_minus.gif", alt: "-" })}
						$(this).parent('li').children('ul').toggle()
					})
			}
		})
		.end()
	//console.log($('#tree li:first').children('a'))
	//if(treeLis.find('li').length){$('#tree li>img').attr({ src: "img/tree_minus.gif", alt: "-" })}
});