function mouseover(element)
 {
   element.style.backgroundColor='#FFB800';
	 element.style.color = 'white';
 }
 
 function mouseout(element)
 {
   element.style.backgroundColor='';
	 element.style.color = 'black';
 }
 
 function showsub(idname)
 {
   document.getElementById(idname).style.visibility = 'visible';
 }
 
 function hidesub(idname)
 {
   document.getElementById(idname).style.visibility = 'hidden';
 }

function popup(plik) {

window.open(plik,'prewiev','directories=no,location=no,menubar=no,resizable=no,scrollbars=no,status=yes,toolbar=no,height=450,width=600');
	return false;

}