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;
}


/*
    Copyright Robert Nyman, http://www.robertnyman.com
    Free to use if this text is included
*/
function getElementsByAttribute(oElm, strTagName, strAttributeName, strAttributeValue) {
    var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    var oAttributeValue = (typeof strAttributeValue != "undefined")? new RegExp("(^|\\s)" + strAttributeValue + "(\\s|$)") : null;
    var oCurrent;
    var oAttribute;
    for(var i=0; i<arrElements.length; i++) {
        oCurrent = arrElements[i];
        oAttribute = oCurrent.getAttribute(strAttributeName);
        if (typeof oAttribute == "string" && oAttribute.length > 0) {
            if (typeof strAttributeValue == "undefined" || (oAttributeValue && oAttributeValue.test(oAttribute))){
                arrReturnElements.push(oCurrent);
            }
        }
    }
    return arrReturnElements;
}

function $() {
    var elements = new Array();
    for (var i=0,len=arguments.length;i<len;i++) {
        var element = arguments[i];
        if (typeof element == 'string') {
            var matched = document.getElementById(element);
            if (matched) {
                elements.push(matched);
            } else {
                var allels = (document.all) ? document.all : document.getElementsByTagName('*');
                var regexp = new RegExp('(^| )'+element+'( |$)');
                for (var i=0,len=allels.length;i<len;i++) if (regexp.test(allels[i].className)) elements.push(allels[i]);
            }
            if (!elements.length) elements = document.getElementsByTagName(element);
            if (!elements.length) {
                elements = new Array();
                var allels = (document.all) ? document.all : document.getElementsByTagName('*');
                for (var i=0,len=allels.length;i<len;i++) if (allels[i].getAttribute(element)) elements.push(allels[i]);
            }
            if (!elements.length) {
                var allels = (document.all) ? document.all : document.getElementsByTagName('*');
                for (var i=0,len=allels.length;i<len;i++) if (allels[i].attributes) for (var j=0,lenn=allels[i].attributes.length;j<lenn;j++) if (allels[i].attributes[j].specified) if (allels[i].attributes[j].nodeValue == element) elements.push(allels[i]);
            }
        } else {
            elements.push(element);
        }
    }
    if (elements.length == 1) {
        return elements[0];
    } else {
        return elements;
    }
}