swapContent = function(contentURL){
	new Ajax.Updater('movie', contentURL, {asynchronous:true});
}
highlightCurrent = function(id){
    
    var blox = new Array();
    blox[1] = 'img1';
    blox[2] = 'img2';
    blox[3] = 'img3';
    blox[4] = 'img4';
 
    for (var y = 1; y < 5; y++){
        if(blox[y] == id){
            newImage = 'url(' + (y + '_on.jpg') + ')';
            document.getElementById(blox[y]).style.backgroundImage = newImage;
        } else {
            newImage = 'url(' + (y + '_off.jpg') + ')';
            document.getElementById(blox[y]).style.backgroundImage = newImage;
        }
    }
}