/**********************************************************
 *  progsite.js
 *
 *  Art & Design Programme Site Template Functions
 *  09 March 2006 (revised 23 May 2007)
 **********************************************************/
 
// Change side image and buttons
function changeimage(imagesrc,buttonon,numbuttons,imagealt)
{
    var buttonpath = '/images/progsite/buttons/';
    
    for (button=1; button<=numbuttons; button++) {
    	
    	var buttonimage = buttonpath+button;
    	if (button == buttonon) {
    	    buttonimage += '_over.gif';
    	    document.getElementById('caption'+button).style.display="block"
    	} else {
    	    buttonimage += '.gif';
    	    document.getElementById('caption'+button).style.display="none"
    	}
    	var buttonid = 'but'+button;   
    	document.images[buttonid].src=buttonimage;
    	
    }

    document.images['progimage'].src=imagesrc;
    document.images['progimage'].alt=imagealt;

}