bgStretcher jQuery Plugin Allows to Add Background Image to Page and Proportionally Resize it to Fill Entire Window Area.bgStretcher 2011 (Background Stretcher) is a jQuery plug-in which allows you to add a large image (or a set of images) to the background of your web page and will proportionally resize the image(s) to fill the entire window area. The plug-in will work as a slideshow if multiple images mode is used (the speed and duration for the slideshow is configurable).