function CornersInit() {
	var corners = getElementsByClass('corners');
	for (i = 0; i < corners.length; i++) {
		corners[i].innerHTML += '<em class="tl"></em><em class="tr"></em><em class="bl"></em><em class="br"></em>';
	}
}

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )	node = document;
	if ( tag == null ) tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if (pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function str_replace (search, replace, subject) {
    var result = "";
    var  oldi = 0;
    for (i = subject.indexOf (search); i > -1; i = subject.indexOf (search, i))	{
	result += subject.substring (oldi, i);
	result += replace;
	i += search.length;
	oldi = i;
    }
    return result + subject.substring (oldi, subject.length);
}