function advert_show(obj,number) {		
	if (obj.className=='') {
		obj.className='on';
		document.getElementById('advert'+number).className='advert_on';
		
	} else {
		obj.className='';
		document.getElementById('advert'+number).className='';
		
	}
}

function list_firms(obj,number) {	
	if (document.getElementById('list_firms_'+number)) {
	if (obj.parentNode.className=='') {
		obj.parentNode.className='on';
        obj.innerHTML = "Свернуть";
		document.getElementById('list_firms_'+number).style.display='block';
	} else {
		obj.parentNode.className='';
        obj.innerHTML = "Смотреть все";                
		document.getElementById('list_firms_'+number).style.display='none';
	}
	}
}

function col_hack() {	
	if (document.getElementById('col_hack')) {
		var isOpera = (navigator.userAgent.indexOf("Opera") != -1);
		var isIE = ((!isOpera)&&(navigator.appName.indexOf("Microsoft Internet Explorer") != -1));
		if (navigator.appName.indexOf('Netscape')!=-1)
			document.getElementById('col_hack').className='moz';
		if (isIE) if (document.getElementById('col_hack_table').offsetWidth%2==1) document.getElementById('col_hack').style.right='-1px';	
	}	
}