function showtip(num, tip) {
	obj = document.getElementById('tooltip');
	obj.innerHTML = tip;
	obj.style.visibility = "visible";
}

function hidetip(){
	document.getElementById('tooltip').style.visibility = 'hidden';
}


var _path = "../images/koule/";

function koule_over(k) {
	//mouse over
	eval("document.getElementById('koule').src= _path + 'k_0" + k + ".png';");
}

function koule_out() {
	// mouse out
	document.getElementById('koule').src = _path + 'k_00.png';
}