/*
    getElementsByClassName() written by Jonathan Snook, http://www.snook.ca/jonathan
    Add-ons by Robert Nyman, http://www.robertnyman.com
*/

function getElementsByClassName(oElm, strTagName, strClassName){
    var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    strClassName = strClassName.replace(/\-/g, "\\-");
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    var oElement;
    for(var i=0; i<arrElements.length; i++){
        oElement = arrElements[i];      
        if(oRegExp.test(oElement.className)){
            arrReturnElements.push(oElement);
        }   
    }
    return (arrReturnElements)
}

function addHover(className) {

    var elements = getElementsByClassName(document,"*",className);

    for (var i = 0; i < elements.length; i++) {
        var element = elements[i];

        element.onmouseover = function () {
            this.className += '_hover';
        }
	
        element.onmouseout = function () {
            classNameLength = this.className.length;
            this.className = this.className.substring(0,(classNameLength - 6));
        }
    }
}