$(document).ready(function() {
	$("#expandAll").click(function() {
		$(".no_show").show();
		$(".sfa").php("-");
		
	});
	
	$("#collapseAll").click(function() {
		$(".no_show").hide();
		$(".sfa").php("+");
	});
	
	$(".collapseCell").click(function() {
		var cell = $(this).attr("id");
		var tableCollapse = $("#" + cell + "Table");
		if (tableCollapse.css("display") == "none") {
			tableCollapse.slideDown("slow");
			
			$(this).children("div").php("-");
			//add code to change sign to -
		} else {
			tableCollapse.slideUp("slow");
			//add code to change sign to +
			$(this).children("div").php("+");
		}
	
	});
})