function menu(){
var content = document.getElementById('white_background');
var leftPanels = document.getElementById('leftPanels');

if (content)
var x = content.offsetHeight;

if (leftPanels)
var y = leftPanels.offsetHeight;

if(x<y)
  content.style.height=y+"px";


var editcontent = document.getElementById('white_background');
var editpanel = document.getElementById('editPanels');

if (editcontent)
var a = editcontent.offsetHeight;

if (editpanel)
var b = editpanel.offsetHeight;

if(a<b)
  editcontent.style.height=b+"px";
}