var timeid;
var opacity = 0;
var canfadein = true;
var fade_id;
var support_opacity = false;


function loaded(){
	
	if(document.getElementById("odkaz").style.opacity!=null) support_opacity = true;
	
	document.getElementById("profil_o").onmousemove=function(){
		clearTimeout(timeid);
		//fadein
		if(canfadein && support_opacity){
			clearTimeout(fade_id)
			document.getElementById("odkaz").style.opacity = '0';
			fade_id = setTimeout(fadein, 50, null);
			canfadein=false;
		}
		//visibilita
		document.getElementById("odkaz").style.visibility = 'visible';
	}
	
	document.getElementById("profil_o").onmouseout=function(){
		timeid = setTimeout(hide, 300, null);
	}
	
	document.getElementById("odkaz").onmousemove=function(){
		clearTimeout(timeid);
	}
	
	document.getElementById("odkaz").onmouseout=function(){
		timeid = setTimeout(hide, 300, null);
	}
	
}

function hide(){
	if(!support_opacity)document.getElementById("odkaz").style.visibility = 'hidden';
	else {
		//fadeout
		canfadein = true;
		clearTimeout(fade_id);
		setTimeout(fadeout, 50, null);
	}
}

function fadein(){
	opacity++;
	document.getElementById("odkaz").style.opacity = "0." + opacity;
	if (opacity<8) fade_id=setTimeout(fadein, 50, null);
}

function fadeout(){
	opacity--;
	document.getElementById("odkaz").style.opacity = "0." + opacity;
	if (opacity>0) fade_id=setTimeout(fadeout, 50, null);
	else document.getElementById("odkaz").style.visibility = 'hidden';
}