/**
 * @author a.goropeka
 */
function roll_over(id) {
	obj = document.getElementById(id).getElementsByTagName('A');
	img=obj[0].getElementsByTagName('img');
	sr=img[0].src;
	num = sr.indexOf('.jpg');
	sr = sr.substring(0,num)+'_hov.jpg';
	img[0].src = sr;
	sp = document.getElementById(id).getElementsByTagName('span');
	sp[0].style.textDecoration = 'underline';
}	
function roll_out(id) {
	obj = document.getElementById(id).getElementsByTagName('A');
	img=obj[0].getElementsByTagName('img');
	sr=img[0].src;
	num = sr.indexOf('_hov.jpg');
	sr = sr.substring(0,num)+'.jpg';
	img[0].src = sr;
	sp = document.getElementById(id).getElementsByTagName('span');
	sp[0].style.textDecoration = 'none';
}