jQuery(function($){
	$("#datagrid").tablesorter({
		headers: { 1: { sorter: false}, 2: {sorter: false} }
	});
	
	var arrUpDownSrc = '/img/default/arrupdown.jpg';
	var arrUpSrc = '/img/default/arrup.jpg';
	var arrDownSrc = '/img/default/arrdown.jpg';
	
	var headers = $("#datagrid .header");
	headers.click(function(){
		var img = $(this).find('img');
		headers.find('img').not(img).attr('src', arrUpDownSrc);
		
		
		var currSrc = img.attr('src');
		if (currSrc === arrDownSrc || currSrc === arrUpDownSrc) {
			img.attr('src', arrUpSrc);
		} else {
			img.attr('src', arrDownSrc);
		}
	});
});