// check browser
msie = (document.all)? true : false;
dom = (document.getElementById)? true : false;

// putting element by id
function putElem(elemId) {
if (dom) document.getElementById(elemId).style.display = "block";
else if (msie) document.all[elemId].style.display = "block"
}

// remov element by id
function removeElem(elemId) {
if (dom) document.getElementById(elemId).style.display = "none";
else if (ie4) document.all[elemId].style.display = "none"
}