function changeSrc(el,img){
	if(el!=null){
		el.src=img;
	}
}

function changeTlo(el,tlo){
	if(el!=null){
		el.className=tlo;
	}
}

function czy_usun(linkp,komunikat){
	if(confirm(komunikat)){
		location.href=linkp;
	}
}


function zaznacz_checkboxy(formularz,tablica,statusel) {
	var elts=(typeof(formularz.elements[tablica+'[]'])!= 'undefined') ? formularz.elements[tablica+'[]'] : '';
	var elts_cnt = (typeof(elts.length) != 'undefined') ? elts.length : 0;
	if (elts_cnt){
		for (var i = 0; i < elts_cnt; i++){ 
		 	elts[i].checked=statusel;
		}
  } else { 
		elts.checked = statusel;
	}
}


function dodajtag(FormName,FieldName,tag,prompttext) {
	if (tag=='b'){ tag_prompt='bold'; }
	if (tag=='i'){ tag_prompt='italic'; }
	inserttext = prompt(prompttext+'\n<'+tag+'>xxx</'+tag+'>','');
	if ((inserttext != null) && (inserttext != '')) {
		document.forms[FormName].elements[FieldName].value += '<'+tag+'>'+inserttext+'</'+tag+'>';
	}
	document.forms[FormName].elements[FieldName].focus();
}

function emotikony_obrazek(pole,znaczek) {
  emotikony_pole=document.getElementById(pole);
  emotikony_pole.value=emotikony_pole.value+znaczek;
  emotikony_pole.focus();
}


function popup_open(okno,adres,w,h) {
	w=w+15;
	h=h+15;
	top_okno=(screen.height-h)/2; 
	if (top_okno<0){
		top_okno=0;
	}
	left_okno=(screen.width-w)/2; 
	
	if (left_okno<0){
		left_okno=0;
	}

	window.open(adres,okno,'top='+top_okno+',left='+left_okno+',width='+w+',height='+h+',toolbar=no,menubar=no,location=no,directories=no,alwaysRaised=no,status=no,scrollbars=no,resizable=yes,fullscreen=0');
	
} 


function wyswietl_ukryty(element){

	document.getElementById(element).style.display='';
	
}