How to overlay one div over another div

Question

I need assistance with overlaying one individual div over another individual div.

My code looks like this:

Answer 1

This is what you need:

function showFrontLayer() {
  document.getElementById('bg_mask').style.visibility='visible';
  document.getElementById('frontlayer').style.visibility='visible';
}
function hideFrontLayer() {
  document.getElementById('bg_mask').style.visibility='hidden';
  document.getElementById('frontlayer').style.visibility='hidden';
}

#bg_mask {
  position: absolute;
  top: 0;
  right: 0;  bottom: 0;
  left: 0;
  margin: auto;
  margin-top: 0px;
  width: 981px;
  height: 610px;
  background : url("img_dot_white.jpg") center;
  z-index: 0;
  visibility: hidden;
} 

#frontlayer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin: 70px 140px 175px 140px;
  padding : 30px;
  width: 700px;
  height: 400px;
  background-color: orange;
  visibility: hidden;
  border: 1px solid black;
  z-index: 1;
} 

  
    

  
  
    

      


        
         Click 'Show front layer' button




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            Now try to click on "Show front layer" button or the text box. It is not active.



            Use position: absolute to get the one div on top of another div.



            The bg_mask div is between baselayer and front layer.



            In bg_mask, img_dot_white.jpg(1 pixel in width and height) is used as background image to avoid IE browser transparency issue;