function createCookie( name,value,days )
{
	if( days )
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		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;
}

function deleteCookie( name )
{
	createCookie(name,"",-1);
}