var aIds = Array( 'pg_418004f35b' );
	var aId  = Array ();
	function ChangePage( to_hide, to_show )
	{
	   var tbl_hide = document.getElementById( aIds[to_hide] );
	   var tbl_show = document.getElementById( aIds[to_show] );
	
	   if ( typeof(tbl_hide)=='object' && tbl_hide!=null )
		if ( typeof(tbl_show)=='object' && tbl_show!=null )
		{
		   tbl_hide.style.display = 'none';
		   tbl_show.style.display = '';
		}
		
	}
	function LettersOnly( old_res, id, field_title )
	{
	   if ( old_res==0 )
	   {
		  var el = document.getElementById( id );
		  if ( typeof(el)=='object' && el!=null )
		  {
			 var re = /^[a-zA-Z\s]+$/;
			 if (el.value.search(re) == -1 )
			 {
				alert( '"' + field_title + '" must contain letters only' );
				return 1;
			 }
		  }
	   }
	   return 0;
	}
	function Email( old_res, id, field_title )
	{ 
	   if ( old_res==0 )
	   {
		  var el = document.getElementById( id );
		  if ( typeof(el)=='object' && el!=null  )
		  {
			 var re = /^[a-zA-Z0-9_\.\-]+@([a-zA-Z0-9][a-zA-Z0-9-]+\.)+[a-zA-Z]{2,6}$/;
	
			 if (el.value.search(re) != -1 )  return 0;
			 else
			 {
				alert( '"'+field_title+'" must be email' );
				return 1;
			 }
		  }
	   }
	   return 0;
	}
	function NotEmpty( old_res, id, field_title )
	{
	   if ( old_res==0 )
	   {
		  var el = document.getElementById( id );
		  if ( typeof(el)=='object' && el!=null )
			if ( el.value=='' )
			{
			   alert( 'You should fill "' + field_title + '"' );
			   return 1;
			}
	   }
	   return 0;
	}