function pocet(){
        area = document.getElementById('area');
	alength = area.value.length;
	if(alength > 300){
		area.value = area.value.substr(0,300);
		document.getElementById('cislo').innerHTML="max";
		document.getElementById('cislo').style.color="red";
	} else {
		document.getElementById('cislo').innerHTML=alength;
		document.getElementById('cislo').style.color="black";
	}
	if(alength >= 1) {
		document.getElementById('enter').disabled = "";
	} else {
		document.getElementById('enter').disabled = "disabled";
	}
}

function writeText(txt)
{
document.getElementById("vyhledejf1").innerHTML=txt;
}

function zobrazSkryj(idecko)
{
	var el = document.getElementById(idecko);
	el.className = (el.className=='skryj') ? '' : 'skryj';
}