function DateDemo(){
   var d, s="", today, diff, prewDate, m_year;
   
   today = new Date(); 
   diff = 7 * 24 * 60 * 60 * 1000;
   prewDate = today.getTime() - diff;
   d = new Date(prewDate);
   
   s += d.getDate() + ".";
   s += (d.getMonth() + 1) + "."; 
   m_year = d.getYear(); 
	if (m_year < 2000) /* kvuli chybe v Mozille s rokem 2000 a kdo vi jeste kde */
	{
		m_year = 2000 + (m_year % 100);
	}

   s += m_year; 
   return(s); 
}

function CurYear(){
   var d, s="";          
   d = new Date();                     
   s += d.getYear(); 
   return(s); 
}

function gen_ncs()
{
	return ("" + Math.ceil(Math.random() * 9999999999999999));
}

var c_year, o_year, o_y;
c_year = CurYear();
if (c_year < 2000) /* kvuli chybe v Mozille s rokem 2000 a kdo vi jeste kde */
{
	c_year = 2000 + (c_year % 100);
}
o_year = (c_year-1).toString(10);
o_y = o_year.substr(2,2) ;