This is what I had in mind.  I am using Updater at the moment so I had to rewrite this code for the example

 for( count=0; count < reports.length; count++){
	url="reports/"+reports[count]+".php";
	// load our reports.  when each one is loaded we load the optional
	// javascript file for that report.
	new Ajax.Request( url, {
		parameters: { day: day, month: month, year: year},
		onCreate: function(transport){
                    showLoading(reports[count])
		    },
                onSuccess:function(transport){
                    $(reports[count].update(transport.responseText);
                    }
                });
    }


reports.each(function(e){

url = "reports/" + e + ".php"

new Ajax.Request(url, {

parameters: {....},
onSuccess: function(transport)
{

$(e).update(transport.responseText)

}.bind(e)

})

})