Menu not visible in IE8. How to make it visible with HTML?

One of the divs, when placed in another style sheet, can make menu invisible in Internet Explorer.

If opacity property is used which is not a cross-border solution, it should be like the following to display −

opaque {  
   -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=70)"; // first  
   filter: alpha(opacity=90);  // second
}