function showDiv(something){
		if(document.getElementById(something).style.visibility == 'visible'){
			document.getElementById(something).style.display = 'none';
			document.getElementById(something).style.visibility = 'hidden';
		
		}else{
		document.getElementById(something).style.visibility = 'visible';
		document.getElementById(something).style.display = 'block';
		}
	}

	function change(imgname,file) {
		document.images[imgname].src=file; 
	}