$(document).ready(function() {
 function setEqualHeightBlock(columns)
 {
   var currentMainBlockHeight = columns.height();
   var tallestcolumn = GetHeightBlock($("#box1")) + GetHeightBlock($("#sidebar-right"));
   //alert(tallestcolumn);
   if (currentMainBlockHeight < tallestcolumn) 
   {
       columns.height(tallestcolumn);   
   }
 }
 
 function GetHeightBlock(columns)
 {
    var currentHeight = columns.height();
	return currentHeight;
 }
  
 setEqualHeightBlock($("#center"));
});