function el(el_id)
{
 return document.getElementById(el_id);
}
function bt_on(bt_img ) 	// podświetl przycisk - onmouseover
{
 bt_img.src = bt_img.id + '_on.gif';
 bt_img.style.left = 1 * bt_img.style.left.substr(0,bt_img.style.left.indexOf('px')) - 5;
 bt_img.style.top = 1 * bt_img.style.top.substr(0,bt_img.style.top.indexOf('px')) - 3;
}
function bt_off(bt_img) 	// wyłącz przycisk - onmouseout
{
 bt_img.src = bt_img.id + '.gif';
 bt_img.style.left = 1 * bt_img.style.left.substr(0,bt_img.style.left.indexOf('px')) + 5;
 bt_img.style.top = 1 * bt_img.style.top.substr(0,bt_img.style.top.indexOf('px')) + 3;
}

function bt_go(bt_img) 	// włącz przycisk - onmousedown
{
 bt_img.src = bt_img.id + '_go.gif';
}

ramka_mouse_offset_x = 0;
ramka_mouse_offset_y = 0;
function zlap()
{
 ramka_mouse_offset_x = window.event.clientX - 1 * ramka.style.left.substr(0,ramka.style.left.indexOf('px'));
 ramka_mouse_offset_y = window.event.clientY - 1 * ramka.style.top.substr(0,ramka.style.top.indexOf('px'));
 if ( (ramka_mouse_offset_x > 528) && (ramka_mouse_offset_x < 546) && (ramka_mouse_offset_y > 152) && (ramka_mouse_offset_y < 540) )
 {
  return;
 }
 else
 {
  document.onmousemove = wlecz;
  document.onmouseup = pusc;
  document.onmouseout = pusc;

 }
}
function wlecz()
{
 ramka.style.left = window.event.clientX - ramka_mouse_offset_x;
 ramka.style.top = window.event.clientY - ramka_mouse_offset_y;
}
function pusc()
{
 document.onmousemove = null;
 document.onmouseup = null;
}

function show_klienci()
{
 // el('img_kli_selena').src = 'kli_selena.gif';
 el('img_kli_designerspiele').src = 'kli_designerspiele.gif';
 el('img_kli_ledia').src = 'kli_ledia.gif';
 el('img_kli_zrodlana').src = 'kli_zrodlana.gif';
 el('img_kli_jcr').src = 'kli_jcr.gif';
 el('img_kli_gabrurka').src = 'kli_gabrurka.gif';
 el('img_kli_maspex').src = 'kli_maspex.gif';
 el('img_kli_nowemedia').src = 'kli_nowemedia.gif';
 el('img_kli_anevet').src = 'kli_anevet.gif';
 el('img_kli_lora').src = 'kli_lora.gif';
 el('img_kli_sadurska').src = 'kli_sadurska.gif';
 el('img_kli_cukierniaanna').src = 'kli_cukierniaanna.gif';

 el('strona').innerHTML = el('KLIENCI').innerHTML;
}