img0_on = new Image(100,27);
img0_on.src="images/welcomrge.gif";
img0_off = new Image(100,27);
img0_off.src="images/welcom.gif";
  
img1_on = new Image(107,27);
img1_on.src="images/venurge.gif";
img1_off = new Image(107,27);
img1_off.src="images/venue.gif";


function over_image(parm_name)
    {
        document[parm_name].src = eval(parm_name + "_on.src");
    }
function off_image(parm_name)
    {
        document[parm_name].src = eval(parm_name + "_off.src");
    }