function ChangeIco(image,newImage)
{
 img_dir = '_images/icons/';
 image.src = img_dir + newImage; 
}

 function OpenMailWindow(url)
  {
   //if (!url) url = '?send_mail';
   window.open(url, 'SendMail', 'menubar=no,toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=yes,fullscreen=no,channelmode=no,width=750,height=600,left=30,top=30').focus();
   return false;
  }
  
  	function CheckMailForm(form)
	{
		PhoneNr = form.PhoneNr.value;
    Email = form.Email.value;
		Name  = form.SignatureName.value;
		
		if (Name == "")
		{
			alert("[Podpis] \nProszę podać swoje dane.");
			return false;
		}
    if (PhoneNr == "")
    if ( Email == "" || Email.indexOf('@', 0) == -1 || Email.indexOf('.', 0) == -1)
		{
			alert("[E-mail] \nProszę podać poprawny adres e-mail.");
			return false;
		}
		return true;
	}