Tiny jQuery plugin for attaching a click event to everything except for the specified element (and its children). To use, just paste clickAnywhereElse.js into your JavaScript file.

clickAnywhereElse.js

// Written by Elliot Bentley, inspired by http://stackoverflow.com/a/3028037
$.fn.clickAnywhereElse = function(callback) {
    var className = '.'+this.attr('class').replace(/ /g,'.');
    $('html').click(function(event){
        if ( !$(event.target).closest( className ).length ) {
            callback();
        }
    });
};

example.js

// This hides the element `.popover` when anything else is clicked.
$('.popover').clickAnywhereElse(function(){
    $(this).hide();
});