function resizeBGImage()
 {

 var bgimage= document.getElementById("bgimage");
 var window_height = document.body.clientHeight;
 var window_width = document.body.clientWidth;
 var image_width = bgimage.width;
 var image_height = bgimage.height;

 //alert ("Window height="+window_height+"\n"+"Window Width="+window_width+"\n"+"Image Height="+image_height+"\n"+"Image Width="+image_width+"\n");
 if(parseInt(bgimage.width) < parseInt(window_width) ){      
    bgimage.width= window_width;
    }

}