function AB_SetZIndex() {
    if (document.getElementsByTagName) {
	var obj = document.getElementsByTagName("div");
    }
    else if (document.all) {
	var obj = document.all.tags("div");
    }
    else {
	return false;
    }	
    zi = 1;
    for (i = (obj.length - 1) ; i >= 0 ; --i) {
	wholeClass = new Array();
	wholeClass = obj[i].className.split(" ");
	for (j = 0 ; j < wholeClass.length ; ++j) {
	    if (wholeClass[j] == "headline") {
	    obj[i].style.zIndex = zi;
	    ++zi;
	    }
	    else if (wholeClass[j] == "digest") {
		obj[i].style.zIndex = obj.length;
	    }
	}
    }
}

function AB_ShowDigest(ID, TopPos) {
    if (document.getElementById) {
	var obj = document.getElementById(ID);	
    }
    else if (document.all) {
	var obj = document.all(ID);
    }
    else {
	return false;
    }
    if (TopPos) {
	obj.style.top = TopPos;
    }
    obj.style.visibility = 'visible';
}

function AB_HideDigest(ID) {
    if (document.getElementById)
	document.getElementById(ID).style.visibility = 'hidden' 
    else if(document.all)
	document.all(ID).style.visibility = 'hidden' 
}