var letter = null;
var count = 0;

document.onmouseup = unloadLetter;

function showLetter(mid){
	unloadLetter();
	clearHide();
 	if(document.layers){return;}
	if(document.getElementById){
		var lay = document.getElementById("letter" + mid);
		lay.style.visibility = "visible";
		letter = mid;		
	}
}

function hideLetter(){
	count++;
	setTimeout('tryHide(' + count + ')', 3000);
}

function tryHide(c){
	if(c==count){
		unloadLetter();
	}
}

function clearHide(){
	count++;
}

function unloadLetter(){
	if(letter){
		if(document.layers){return;}
		if(document.getElementById){
			var lay = document.getElementById("letter" + letter);
			lay.style.visibility = "hidden";
			letter = null;
		}
	}
}


function clearLex (arLex) {

	var lexA;

	for (var i = 0; i<arLex.length; i++) {
		if(document.layers){return;}
		if(document.getElementById){
			lexA = document.getElementById('lex' + arLex[i]);
			if (lexA) {
				lexA.className = 'lex';
			}
		}
	}
}