Add code to css/html5 gradient creator so that gradient code for older browsers is also created

Hello, I have with me a jquery gradient generator tool--> at [login to view URL] Now the above tool only generates gradients for newer browsers (viz IE9 and above and new versions of Opera/Firefox/Chrome). I simply want you to modify the above, so that it also generates gradients for older browsers (IE6/7/8, older versions of Firefox/Chrome/Opera) Simple work for a good JS/HTML developer - hence I expect low bids on this project...There may be additional work for you if you do this correctly Please mention the number of days you require to do this work. Thanks, Arvind.