function show_hide( _id )
{
	var i = document.getElementById( _id );
	if( i.style.display == 'inline' )
		i.style.display = 'none';
	else
		i.style.display = 'inline';
}

function restore_colors( _id )
{
	var i = document.getElementById( _id );
	i.style.background = '#ffffff';
	i.style.borderColor = '#ffffff';
}

function change_colors( _id )
{
	var i = document.getElementById( _id );
	i.style.background = '#E5E5E5';
	i.style.borderColor = '#ad1919';
}

function change_link_color( _id )
{
	document.getElementById( _id ).style.color = '#ad1919';
}

function restore_link_color( _id )
{
	document.getElementById( _id ).style.color = '#175f9c';
}

function setCookie( name, value, time )
{
	if( time )
	{
		var date = new Date();
		date.setTime( date.getTime() + time );
		var expires = "; expires=" + date.toGMTString();
	}
	else var expires = "";
	document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie( name )
{
	var nameEQ = name + "=";
	var ca = document.cookie.split( ';' );
	for( var i = 0; i < ca.length; i++ )
	{
		var c = ca[i];
		while( c.charAt( 0 ) == ' ' ) c = c.substring( 1, c.length );
		if( c.indexOf( nameEQ ) == 0 ) return c.substring( nameEQ.length, c.length );
	}
	return null;
}