* html .fixedBox{top:expression(documentElement.scrollTop + body.scrollTop + "px");}
.backgroundMask{

background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAABtJREFUeNpiZGBgSGMgAjAxEAlGFVJHIUCAAQCzYgB6IulGJwAAAABJRU5ErkJggg==)\0/;
*background:none;*filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#66000000,endColorstr=#66000000);
_position:absolute;_top:expression(documentElement.scrollTop + body.scrollTop + "px");}
.backgroundMaskWhite{

background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAABtJREFUeNpi/P//fxoDEYCJgUgwqpA6CgECDAB25QN3Jdr7fQAAAABJRU5ErkJggg==)\0/;
*background:none;*filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#66FFFFFF,endColorstr=#66FFFFFF);}
.backgroundMaskLightGray{

background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAABtJREFUeNpi/PnzZxoDEYCJgUgwqpA6CgECDABaNQNl1zBzYwAAAABJRU5ErkJggg==)\0/;
*background:none;*filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#66F9F9F9,endColorstr=#66F9F9F9);}