// From: http://techpatterns.com/downloads/javascript_cookies.php

// 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			
		
		var equal_index = a_all_cookies[i].indexOf("=");
		
		if (equal_index > -1) {
            cookie_name = a_all_cookies[i].substr(0,equal_index);
        }
        else {
            cookie_name = a_all_cookies[i];
        }            

		// and trim left/right whitespace while we're at it
		cookie_name = cookie_name.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 ( equal_index > -1 )
			{
			    cookie_value = a_all_cookies[i].substr(equal_index+1);
				cookie_value = unescape( cookie_value.replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}

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 = 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";
}