jquery.live.change.js

/* 
	Add live('change') ability on IE with jQuery 1.3.2
	Should use with conditional comment. e.g.
	<!--[if IE]>
		<script type="text/javascript" src="jquery.live.change.js"></script>
	<![endif]-->
*/
(function(){
jQuery.event.special.change = {
	filters: {
		click: function( e ) { 
			var elem = e.target;

			if ( elem.nodeName.toLowerCase() === "input" && elem.type === "checkbox" ) {
				return trigger( "change", this, arguments );
			}

			return changeFilters.keyup.call( this, e );
		}, 
		keyup: function( e ) { 
			var elem = e.target, data, index = elem.selectedIndex + "";

			if ( elem.nodeName.toLowerCase() === "select" ) {
				data = jQuery.data( elem, "_change_data" );
				jQuery.data( elem, "_change_data", index );

				if ( (elem.type === "select-multiple" || data != null) && data !== index ) {
					return trigger( "change", this, arguments );
				}
			}
		},
		beforeactivate: function( e ) {
			var elem = e.target;

			if ( elem.nodeName.toLowerCase() === "input" && elem.type === "radio" && !elem.checked ) {
				return trigger( "change", this, arguments );
			}
		},
		blur: function( e ) {
			var elem = e.target, nodeName = elem.nodeName.toLowerCase();

			if ( (nodeName === "textarea" || (nodeName === "input" && (elem.type === "text" || elem.type === "password")))
				&& jQuery.data(elem, "_change_data") !== elem.value ) {

				return trigger( "change", this, arguments );
			}
		},
		focus: function( e ) {
			var elem = e.target, nodeName = elem.nodeName.toLowerCase();

			if ( nodeName === "textarea" || (nodeName === "input" && (elem.type === "text" || elem.type === "password" ) ) ) {
				jQuery.data( elem, "_change_data", elem.value );
			}
		}
	},

	setup: function( data, namespaces, fn ) {
		for ( var type in changeFilters ) {
			jQuery.event.add( this, type + ".specialChange." + (fn? "."+fn.guid : ""), changeFilters[type] );
		}
		
		// always want to listen for change for trigger
		return false;
	},
	teardown: function( namespaces, fn ) {
		for ( var type in changeFilters ) {
			jQuery.event.remove( this, type + ".specialChange" + (fn ? "."+fn.guid : ""), changeFilters[type] );
		}
	}
};

function trigger( type, elem, args ) {
	args[0].type = type;
	return jQuery.event.handle.apply( elem, args );
}

var changeFilters = jQuery.event.special.change.filters;
})();