jQuery 1.3 compatible version of the ajax queue plugin.

jquery.ajax_queue.js

/**
 * Ajax Queue Plugin
 * 
 * Original Homepage: http://jquery.com/plugins/project/ajaxqueue
 * Original Documentation: http://docs.jquery.com/AjaxQueue
 */

jQuery.ajaxQueue = function(o){
	var _old = o.complete;
	o.complete = function(){
		if ( _old ) _old.apply( this, arguments );
		jQuery([ jQuery.ajaxQueue ]).dequeue( "ajax" );
	};

	jQuery([ jQuery.ajaxQueue ]).queue("ajax", function(){
		jQuery.ajax( o );
	});

	if ( jQuery([ jQuery.ajaxQueue ]).queue("ajax").length == 1 ) {
		jQuery([ jQuery.ajaxQueue ]).dequeue("ajax");
	}
};