SharePoint 2010 jQuery Plugin to make web parts collapsable

0_jquery.spcollapsable.js

(function($){
	var options = { 
		collapse: true,
		expandHtml: "▶",
		collapseHtml: "▼"
  	};

	var makeCollapsable = function($wpElement, optionOverrides) {
        $.extend(options, optionOverrides);
        
        addToggleButton($wpElement);
        bindEvents($wpElement);

        if (options.collapse) {
        	collapse($wpElement);
        }
	};

	var bindEvents = function($wp) {
		$wp.find(".ms-WPHeader").on("click", function(){
			var $this = $(this);
			//abort collapse toggle if it was the web part menu dropdown
			if ($this.hasClass("ms-WPHeaderTdMenu")) return true;
			toggleCollapse($wp);
		});
	};

	var addToggleButton = function($wp) {
		var html = "<td align='left' style='width:15px; border-bottom: 1px solid transparent;'>"
		html += "<a class='collapseBtn' href='#'>"+ options.collapseHtml + "</a></td>";
		$wp.find(".ms-WPHeader").prepend(html);
	};
	var toggleCollapse = function($wp) {
		//If visible collapse else expand
		if ($wp.find("[webpartid]").closest("tr").is(":visible")) {
			collapse($wp);
		} else {
			expand($wp);
		}
	};

	var collapse = function($wp) {
		$wp.find("[webpartid]").closest("tr").hide();
		$wp.find(".ms-WPHeader a.collapseBtn").html(options.expandHtml);
	};

	var expand = function($wp) {
		$wp.find("[webpartid]").closest("tr").show();
		$wp.find(".ms-WPHeader a.collapseBtn").html(options.collapseHtml);
	};

	var findWebParts = function($container) {
		return $(".ms-WPHeader").closest(".s4-wpcell-plain");
	};
	
	$.fn.spCollapsable = function(options) {
		return this.each(function(){
			var webparts = findWebParts($(this));
			webparts.each(function(){
				makeCollapsable($(this), options);
			});
		});
	};
})(jQuery);

exampleUsage.js

//Collapse all web parts
$("body").spCollapsable();

//Only collapse web parts on the right side. 
//It just looks for any webparts inside the selector you give it.
$(".ms-rte-layoutszone-outer").spCollapsable();

//Make web parts collapsable, but leave them expanded by default
$("body").spCollapsable({ collapse: false });

//Use a plus and minus sign for the icons instead of the triangle arrows
$("body").spCollapsable({ collapseHtml: "-", expandHtml: "+" });