function show(){
		var ch = document.getElementById('ch'), ct = document.getElementById('ct'), bl = document.getElementById('bl');
		if ((ch.innerHTML.length>2)&&(ct.innerHTML.length>2)){
			bl.style.display = 'block';
		} 	
}

function show2(){
	var mt = document.getElementById('mt');
	if (mt.innerHTML.length<6){
		mt.style.display = 'none';
	}
}