function ShowHowtoBuildPage(pageshow)
{
    //debugger;
    var pageURL = '../Documents/'+pageshow;
   var pageFeatures = 'width=636,height=500,scrollbars=no,resizable=no,left=' + (screen.availWidth - 636) / 2 + ',top=' + (screen.availHeight - 500) / 2;
       pageFeatures += ',location=no, directories=no, status=no, menubar=no, scrollbars=yes, copyhistory=no, resizable=no';
   var pageName = 'howtoBuildDM';
       window.open(pageURL,pageName,pageFeatures,'');
}