function TrapEnterKeyForSearch(evt,sourceTextBoxName)
{  
 var txtValue;
      if(evt && evt.target)
      {
            if (evt.keyCode == 13)
          {              
	    txtValue = document.getElementById(sourceTextBoxName).value;		
            RedirectToSearchURL(txtValue,'0');
            return false;
        }
      }
      else if(window.event)
      {
            if (event.keyCode == 13)
        {              
            txtValue = document.getElementById(sourceTextBoxName).value;	
            RedirectToSearchURL(txtValue,'0');
            return false;
        }
      }
}
function RedirectToSearchURL(sourceName) 
{ 
	var searchURL; 
	var txtboxValue;
	txtboxValue = document.getElementById(sourceName).value;     
    searchURL = "http://search.mercola.com/Results.aspx?k=" + txtboxValue ;
    location.href = searchURL ;
}