if ( document.images )
{
    image_off= new Image(320,69);
    image_off.src="images/pic_wordbubble-off.gif";  

    image2= new Image(320,69);
    image2.src="images/pic_wordbubble-fb.gif";
    image3= new Image(320,69);
    image3.src="images/pic_wordbubble-tw.gif";  
    image4= new Image(320,69);
    image4.src="images/pic_wordbubble-wp.gif";   
    image5= new Image(320,69);
    image5.src="images/pic_wordbubble-li.gif";   
}

function change1( picName, imgName )
{
    if ( document.images )
    {
        imgOn = eval( imgName + ".src" );
        document[picName].src = imgOn;
    }
}