function rezoom()
{
	size = Get_Cookie('zoom');
	zoom(size != null ? size : 0);
}

function zoom(fontSize)
{
	var factor = 0.2;
	var body = document.getElementsByTagName("body")[0];
	body.style.fontSize = (1.0 + factor*fontSize) + "em";	

	Set_Cookie('zoom', fontSize, 1, '/');

}

function relZoom(fontChange)
{
	fontSize = Get_Cookie('zoom');
	fontSize = (fontSize == 'null'  ? 0 : parseInt(fontSize));
	zoom(fontSize + fontChange);
}

function Set_Cookie( name, value, expires, path, domain, secure )
{
	// set time, it's in milliseconds
	var today = new Date();
	today.setTime( today.getTime() );

	/*
	if the expires variable is set, make the correct expires time, the current script below will set
	it for x number of days, to make it for hours, delete * 24, for minutes, delete * 60 * 24
	*/
	if ( expires )
		expires *= 1000 * 60 * 60 * 24;

	var expires_date = new Date( today.getTime() + (expires) );

	document.cookie = name + "=" +escape( value ) +
		( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
		( ( path ) ? ";path=" + path : "" ) +
		( ( domain ) ? ";domain=" + domain : "" ) +
		( ( secure ) ? ";secure" : "" );
}

// this deletes the cookie when called
function Delete_Cookie( name, path, domain ) 
{
	if ( Get_Cookie( name ) ) 
		document.cookie = name + "=" +
		( ( path ) ? ";path=" + path : "") +
		( ( domain ) ? ";domain=" + domain : "" ) +
		";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

// this fixes an issue with the old method, ambiguous values
// with this test document.cookie.indexOf( name + "=" );
function Get_Cookie( check_name ) 
{
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );

		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}

	if ( !b_cookie_found )
		return null;
}