function show_menu(){
    	if(document.getElementById('mainMenu')) document.getElementById('mainMenu').style.display = 'block';
        if(document.getElementById('submenu')) document.getElementById('submenu').style.display = 'block';
    }

    function setOpacity(arg, value) {
        var newobj = document.getElementById(arg);
        if(newobj){
            newobj.style.opacity = value/100;
            newobj.filters.alpha.opacity = value;
		}else{
            arg.style.opacity = value/100;
            arg.filters.alpha.opacity = value;
        }
		return true;
    }
	
    function on5klik(idn){
        var zin=10;
        for(i=0; i<5; i++){
            if(i==idn){
				var poprz = document.getElementById("gal5klik_akt").value;
				if(document.getElementById('klikt_'+i)) document.getElementById('klikt_'+i).style.zIndex=zin+1+30;
				if(document.getElementById('klikm_'+i)) document.getElementById('klikm_'+i).style.zIndex=zin+2+30;
                if(document.getElementById('klikr_'+i)) document.getElementById('klikr_'+i).style.zIndex=zin+3+30;
                if(document.getElementById('klikn_'+i)) document.getElementById('klikn_'+i).style.zIndex=zin+4+30;
                if(document.getElementById('klikl_'+i)) document.getElementById('klikl_'+i).style.zIndex=zin+5+30;
				//fade('klikt_'+i, 0, 100, 300);
				//fade('klikr_'+i, 0, 100, 300);
				//fade('klikn_'+i, 0, 100, 300);
				//fade('klikl_'+i, 0, 100, 300);
				//fade('klikm_'+i, 70, 0, 300);
				//fade('klikm_'+poprz, 0, 70, 300);
	            document.getElementById('klikm_'+i).style.opacity = 0;
	            document.getElementById('klikm_'+i).style.filter="Alpha(Opacity=0)";
            }else{
                if(document.getElementById('klikt_'+i)) document.getElementById('klikt_'+i).style.zIndex=zin+1+(5*i);
				if(document.getElementById('klikm_'+i)) {
					document.getElementById('klikm_'+i).style.zIndex=zin+2+(5*i);
		            document.getElementById('klikm_'+i).style.opacity = 0.65;
		            document.getElementById('klikm_'+i).style.filter="Alpha(Opacity=65)";
				}
				if(document.getElementById('klikr_'+i)) document.getElementById('klikr_'+i).style.zIndex=zin+3+(5*i);
                if(document.getElementById('klikn_'+i)) document.getElementById('klikn_'+i).style.zIndex=zin+4+(5*i);
                if(document.getElementById('klikl_'+i)) document.getElementById('klikl_'+i).style.zIndex=zin+5+(5*i);
            }
        }
        if(document.getElementById("gal5klik_akt")) document.getElementById("gal5klik_akt").value = idn*1;
	}
    var gal_loop = "start";
    
    function start_klik5_start (ak){
      if ( ak == "start" ) gal_loop = setInterval ( "gal_loop_fun()", 3000 );
      else clearInterval ( gal_loop );
    }
    
    function gal_loop_fun (){
        if(document.getElementById("gal5klik_akt")){
            if(document.getElementById("gal5klik_akt").value > 3) document.getElementById("gal5klik_akt").value = -1; 
            on5klik((document.getElementById("gal5klik_akt").value*1)+1);
        }
    }

function getElm(eID) {
	return document.getElementById(eID);
}
function show(eID) {
	getElm(eID).style.display='block';
}
function hide(eID) {
	getElm(eID).style.display='none';
}
function setOpacity(eID, opacityLevel) {
	var eStyle = getElm(eID).style;
	eStyle.opacity = opacityLevel / 100;
	eStyle.filter = 'alpha(opacity='+opacityLevel+')';
}
function fade(eID, startOpacity, stopOpacity, duration) {
	var speed = Math.round(duration / 100);
	var timer = 0;
	if (startOpacity < stopOpacity){
		for (var i=startOpacity; i<=stopOpacity; i++) {
			setTimeout("setOpacity('"+eID+"',"+i+")", timer * speed);
			timer++;
		} return;
	}
	for (var i=startOpacity; i>=stopOpacity; i--) {
		setTimeout("setOpacity('"+eID+"',"+i+")", timer * speed);
		timer++;
	}
}
function fadeIn(eID) {
	setOpacity(eID, 0); show(eID); var timer = 0;
	for (var i=1; i<=100; i++) {
		setTimeout("setOpacity('"+eID+"',"+i+")", timer * 5);
		timer++;
	}
}
function fadeOut(eID) {
	var timer = 0;
	for (var i=100; i>=1; i--) {
		setTimeout("setOpacity('"+eID+"',"+i+")", timer * 3);
		timer++;
	}
	setTimeout("hide('"+eID+"')", 310);
}