/*
+--------------------------------------------------------------------------
|   (SnS) AJAX Mark forum as read
|   for IP.Board 2.1.x
|   based on standart multiquote functions
|   ========================================
|   (c) 2007 Sannis
|   http://www.ibresource.ru/forums/index.php?showuser=36662
|   http://ibpower.ru/?showuser=33
+---------------------------------------------------------------------------
*/

function mark_forum_read( fid )
{
	//----------------------------------
	// Using fancy js?
	//----------------------------------
	
	if ( ! use_enhanced_js )
	{
		return false;
	}
	
	//----------------------------------
	// Prevent double-click
	//----------------------------------
	
	var div_content = document.getElementById( 'f-' + fid ).innerHTML;

	/*--------------------------------------------*/
	// Main function to do on request
	// Must be defined first!!
	/*--------------------------------------------*/
	
	do_request_function = function()
	{
		//----------------------------------
		// Ignore unless we're ready to go
		//----------------------------------
		
		if ( ! xmlobj.readystate_ready_and_ok() )
		{
			// Could do a little loading graphic here?
			return;
		}
		
		//----------------------------------
		// INIT
		//----------------------------------
		
		var returned = xmlobj.xmlhandler.responseText;
		
		if ( returned != "fail" )
		{
			//----------------------------------
			// Explode returned string
			//----------------------------------
			var re = new RegExp( "<([^<>]*)><([^<>]*)><([^<>]*)><([^<>]*)>(.*)" );
			//re.compile("<(.*)><(.*)><(.*)><(.*)>(.*)");
			
			var cookie_name = returned.replace( 	re, "$1" );
			var cookie_value = returned.replace( 	re, "$2" );
			var cookie_domain = returned.replace( 	re, "$3" );
			var cookie_path = returned.replace( 	re, "$4" );
			var img = returned.replace( 			re, "$5" );
			
			//----------------------------------
			// Set cookie
			//----------------------------------
			
			var cookie_expires = new Date();
			cookie_expires.setTime(cookie_expires.getTime() + 365 * 24 * 60 * 60 * 1000);
			var cookie_text = cookie_name + "=" + escape(cookie_value)
								+ ((cookie_expires) ? "; expires=" + cookie_expires.toGMTString() : "")
								+ ((cookie_path) ? "; path=" + cookie_path : "")
								+ ((cookie_domain) ? "; domain=" + cookie_domain : "");
			document.cookie = cookie_text;
			
			//----------------------------------
			// Update forum img
			//----------------------------------
			
			document.getElementById( 'f-' + fid ).innerHTML = img;
			document.getElementById( 'f-' + fid ).onclick = "";
		}
	}
	
	//----------------------------------
	// LOAD XML
	//----------------------------------
	
	xmlobj = new ajax_request();
	xmlobj.onreadystatechange( do_request_function );
	
	xmlobj.process( ipb_var_base_url + 'act=xmlout&do=mark-forum&md5check='+ipb_md5_check+'&fid='+fid );
	
	return false;
}