function chgImage( name, width, height, caption ){
	
	image = document.getElementById('largeImg');
	image.src = 'http://www.rougeart.net/uploaded_files/'+name;
	
	if( width == '' || height == '' ){
		d = document.getElementById('dimensions');
		d.style.visibility = 'hidden';
	}
	else{
		d = document.getElementById('dimensions');
		d.style.visibility = 'visible';
		if( w = document.getElementById('width') ){
			w.innerHTML = width;
		}
		if(	h = document.getElementById('height') ){
			h.innerHTML = height;
		}
	}
	if(	c = document.getElementById('caption') ){
		
		c.innerHTML = caption;
	}
}//chgImage