How to use Gradient Effect for IE-7 and IE-8

use these two lines in the ID or class where you required the Effect. 

filter:  progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#ededed'); /* ie7 */
-ms-filter:  progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#ededed'); /* ie8 */