Justify Horizontal Elements

$(document).ready(function(){
    var children = $('#navigation ul li');
	var itemSpace = 0;
	var itemHeight = 0;
	children.each(function(item){
		itemSpace += $(this).width();
		itemHeight = $(this).height();
	});
 	var margin = Math.floor(($('#navigation').width() - itemSpace) / (children.size() - 1)) - 2;
 	children.each(function(item){
 
   		if(item != 0) {
			$(this).css('padding-left', margin + 'px' );
   		}
	});	
    });
});