function switchdiv() { divInfo = document.getElementById('master'); if (divInfo.style.display == 'none') divInfo.style.display = 'block'; else divInfo.style.display = 'none'; }

Image

div.master{ position:absolute; width:350px; height:255px; border:1px solid gray; padding:5px; /*top:50%;*/ /*left:50%;*/ margin-left:225px; margin-top:-290px; /*margin-right:355px;*/ }