function roll_over(img_name, img_src) {

	document[img_name].src = img_src;
}

//fukcja dodaje word_part do urla 
function select_group_phrasal() {

	var selectmenu = document.getElementById("select_part_word");

	var chosenoption = selectmenu.options[selectmenu.selectedIndex].text;

	// console.log(chosenoption);

	document.getElementById('filtered_ap').href = "nauka_word/filtered/angielski_polski/"
			+ chosenoption;
	document.getElementById('filtered_pa').href = "nauka_word/filtered/polski_angielski/"
			+ chosenoption;
	document.getElementById('filtered_slideshow').href = "nauka_slideshow/filtered/"
			+ chosenoption;
	document.getElementById('filtered_i_know').href = "nauka_i_know/filtered/"
			+ chosenoption;
}


//funkcja do summitowania enterem - wykorzysywana w nauka_word
function submitenter(myfield, e, name_of_submit_button) {
	var keycode;
	if (window.event)
		keycode = window.event.keyCode;
	else if (e)
		keycode = e.which;
	else
		return true;

	if (keycode == 13) {
		myfield.form.name_of_submit_button.click();
		return false;
	} else
		return true;
}

function myFunc()
{
	alert('ssss');
}

function enable_visible(form_id)
{
	document.getElementById('ol_validation_message_' + form_id).style.display = 'none';
	document.getElementById('ol_confirmation_message_' + form_id).style.display = 'none';
	document.getElementById('ol_fields_' + form_id).style.display = 'block';
}