function clickHandler(e) {

    var srcElement;
    if (!e) var e = window.event;
    if (e.target) srcElement = e.target;
    else if (e.srcElement) srcElement = e.srcElement;

    if (srcElement.nodeType == 3) { srcElement = srcElement.parentNode; }

    if (srcElement.className == "zalacznik1") {
        targetID = srcElement.id+ "_1";

		
        targetElement = document.getElementById(targetID);
        if (targetElement.style.display == "none") { targetElement.style.display = ""; document.getElementById('dol').style.bottom=0;}
        else { targetElement.style.display = "none"; document.getElementById('tlobg').style.height='100%'; }
    }
	   
}

document.onclick = clickHandler;