/* -------Go to specific link------------  */
function goToURL(url){
    window.location.href = url;
}

/* -------Change image SRC------------  */
function changeImage(imgId, imgSrc){
    document.getElementById(imgId).src = imgSrc;
}

function $(id)
{
    return document.getElementById(id);
}

function $$(item, tagName)
{
	if (typeof(item) == "string")
	{
	    if ($(item) != null)
	        return $(item).getElementsByTagName(tagName);
	    else
	        return null;
	}else{
	    if (item.getElementsByTagName != null)
	    {
	        return item.getElementsByTagName(tagName);
	    }else{
	        return null; 
	    }
	}
}