jquery file.download plugin alteration

With reference to the following jquery file download plugin - [login to view URL] I require a functioning example of the POST REQUEST METHOD of this plugin with the following alterations: 1/ A simple form with 2x select inputs. 2/ php script to receive the form inputs on form submit and initiate file download relevant to form input selection. 3/ On download I require no page shading 4/ Alternatively to modal windows displaying messages I require the messages to be shown in a <div> tag within the html. The same div needs to display both the downloading...please wait and the success or failure response. If possible I also need to display a third response option if a specific condition is met during php processing of for inputs. 5/ In addition to success response I need another additional <div> on the same page to slide down and show hidden content. 6/ Inclusive to the download failure response I require a standard, non-jquery download link to the file to be displayed to the user. - the file name must be passed back from the php. 7/ No iframes please. You can use any input examples and any files (but must include at least two to allow selection from inputs). I require the functionality to be correct, design and content are not important. Many Thanks.