// Funkcje zmiany koloru przyciskow.
function changeMenuButton (obj, state) {
	switch (state) {
	case 0:
		obj.className = 'menu_button_out';
		break;
	case 1:
		obj.className = 'menu_button_over';
		break;
	}
}

function changeAccountButton (obj, state) {
	switch (state) {
	case 0:
		obj.className = 'account_button_out';
		break;
	case 1:
		obj.className = 'account_button_over';
		break;
	}
}

function checkPrice (price) {
	var sign = '';
	var pos  = price.value.length;
	for (var i = 0; i < price.value.length; i++) {
		sign = price.value.charCodeAt(i);
		if (!((sign >= 48 && sign <= 57) || (sign == 44) || (sign == 46))) {
			pos = i;
			break;
		}
	}
	
	price.value = price.value.replace (',', '.');
	
	price.value = price.value.substring(0, pos);
}

function Chmurka(T,t){
	T.title=''
	T.parentNode.lastChild.style.display=t?'block':'none'
}