onerror=handleErr 

function handleErr(msg,url,l)
{
	txt="There was an error on this page.\n\n"
	txt+="Error: " + msg + "\n"
	txt+="URL: " + url + "\n"
	txt+="Line: " + l + "\n\n"
	txt+="Click OK to continue.\n\n"
	alert(txt)
	return true
}


function toggle_visibility(object) 
{
	var e = document.getElementById(object);
	if(e.style.display == 'none')
	{
		e.style.display = 'block';
	}
	else
	{
		e.style.display = 'none';
	}
}

function vis_on(object)
{
	var e = document.getElementById(object);
	e.style.display = 'block';
}

function vis_off(object)
{
	var e = document.getElementById(object);
	e.style.display = 'none';
}