.modalBackground
{
 background-color:#FFFFFF;
  filter:alpha(opacity=40);
  opacity:0.5;
}

.ModalWindow
{
  border: 1px solid #DC0600;
  background:#FFFF99;
  padding: 0px10px10px10px;
  position:fixed;
  top:-1000px;
}
.ModalWindowOk
{
  border: 1px solid #0D1B12;
  background:#D6FF91;
  padding: 0px10px10px10px;
  position:fixed;
  top:-1000px;
}
.css_msgbox
{
    background-color:#FFFF99;
    float: left;
    margin-right:200;
    width: 400px;
    margin-top:200;

}

.cdiv 
{
  position:absolute; /* important. */
  left:50%; /*important if you want it absolutely centred in window. */ 
  margin-left:-200px; /* importnant. must be half the width. */
  top:40%;
  width:400px; /* set to your requirements, but remember left margin setting. */
  height:200px; /* not neccessary if the element needs to grow with content. */
  border:2px solid #0D1B12; /* not important. */
  background-color:#FFFF99; /* not important. */
  text-align:center; /*not important. */
}
.cdivOk 
{
  position:absolute; /* important. */
  left:50%; /*important if you want it absolutely centred in window. */ 
  margin-left:-200px; /* importnant. must be half the width. */
  top:40%;
  width:400px; /* set to your requirements, but remember left margin setting. */
  height:200px; /* not neccessary if the element needs to grow with content. */
  border:2px solid #0D1B12; /* not important. */
  background-color:#D6FF91; /* not important. */
  text-align:center; /*not important. */
}