function show_menu(menu){
	hide_all_menu();
	document.getElementById(menu).style.display='block';
}


function hide_all_menu(){
	if (document.getElementById('menu_1') != null)
		document.getElementById('menu_1').style.display='none';
		
	if (document.getElementById('menu_2') != null)
		document.getElementById('menu_2').style.display='none';
		
	if (document.getElementById('menu_3') != null)
		document.getElementById('menu_3').style.display='none';	
		
	if (document.getElementById('menu_4') != null)
		document.getElementById('menu_4').style.display='none';	
}


function up_menu(img_id, img_src) {
	document.getElementById(img_id).src = "/img/"+img_src;
}



function show_zamowienie() {
	document.getElementById('linki').style.display='none';
	document.getElementById('formularze').style.display='block';	
}