var browser = navigator.appName;
var b_version = navigator.appVersion;
var version = parseFloat(b_version);
var bFF = false; //document.getElementById ? 1 : 0;
var bIE6 = false; 
var bIE7 = false; 
var bSafari = false;
var bOpera = false;

if( browser == "Netscape" ) 
{
	bFF = true;
	if( b_version.search("Safari") != -1 ) bSafari = true;
}
else if( browser == "Microsoft Internet Explorer" && version == 4 )
{
	if( b_version.search("MSIE 7") != -1 ) bIE7 = true;
	else if( b_version.search("MSIE 6") != -1 )	bIE6 = true;
}
else if( browser == "Opera" ) 
{
	bOpera = true;
}



function GetXMLHttp()
{
	var xmlHttp;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp = new XMLHttpRequest();
		return xmlHttp;
	}
	catch( e )
	{
		// Internet Explorer
		try
		{
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
			return xmlHttp;
		}
		catch( e )
		{
			try
			{
				xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
				return xmlHttp;
			}
			catch( e )
			{
				alert("Your browser does not support AJAX!");
				return 0;
			}
		}
	}
}


function UpdateNameList(nType)
{
	var strURL = "/name-get.php?t=" + nType;
	//alert( strURL );
	
	var xmlhttp = GetXMLHttp();

	xmlhttp.onreadystatechange = function() 
	{	
		if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
		{
			//alert( xmlhttp.responseText );
			var obj;
			obj = document.getElementById( "namelist"+nType );
			obj.innerHTML = xmlhttp.responseText;
		}
	}
	
	xmlhttp.open( "POST", strURL, true );
	xmlhttp.send( null );	
}


function UpdateQuickMsgList(nType)
{
	var strURL = "/quickmsglist-get.php?n=" + nType;
	//alert( strURL );
	
	var xmlhttp = GetXMLHttp();

	xmlhttp.onreadystatechange = function() 
	{	
		if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
		{
			//alert( xmlhttp.responseText );
			var obj;
			obj = document.getElementById( "quickmsglist_"+nType );
			obj.innerHTML = xmlhttp.responseText;
		}
	}
	
	xmlhttp.open( "POST", strURL, true );
	xmlhttp.send( null );	
}


function SaveQuickmsg(nType,strMsg)
{
	strMsg = strMsg.replace("'","''");
	strMsg = URLEncode( strMsg );
	if( strMsg != "" )
	{
		var strURL = "/quickmsg-save.php?n=" + nType + "&msg=" + strMsg;
		//alert( strURL );
		
		var xmlhttp = GetXMLHttp();
		
		xmlhttp.open( "POST", strURL, false );
		xmlhttp.send( null );	
		
		if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
		{
			//alert("");
			UpdateQuickMsgList(nType);
		}
	}
}


function DeleteQuickmsg(nType, nMsgID)
{
	if( nMsgID > 0 )
	{
		var strURL = "/quickmsg-del.php?n=" + nMsgID;
		//alert( strURL );
		var xmlhttp = GetXMLHttp();
		
		xmlhttp.open( "POST", strURL, false );
		xmlhttp.send( null );	
		
		if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
		{
			//alert( xmlhttp.responseText );
			UpdateQuickMsgList(nType);
		}
	}
}

function GetObjectValue( name )
{
	var obj; if( bIE7 || bIE6 ) { obj = document.all( name ); } else if( bFF || bOpera ) { obj = document.getElementById(name); }
	return obj.value;
}


function UpdateNewsList()
{
	var strURL = "/news-get.php";
	//alert( strURL );
	
	var xmlhttp = GetXMLHttp();

	xmlhttp.onreadystatechange = function() 
	{	
		if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
		{
			//alert( xmlhttp.responseText );
			var obj;
			if( bIE7 || bIE6 )
			{
				obj = document.all( "newslist" );
			}
			else if( bFF || bOpera )
			{
				obj = document.getElementById( "newslist" );
			}
			obj.innerHTML = xmlhttp.responseText;
		}
	}
	
	xmlhttp.open( "POST", strURL, true );
	xmlhttp.send( null );	
}

function SaveNews(newstitle,newsdesc,email,url)
{
	str1 = GetObjectValue(newstitle);
	str2 = GetObjectValue(newsdesc);
	str3 = GetObjectValue(email);
	str4 = GetObjectValue(url);
	
	if( str1 != "news headline" && str2 != "write a news story" )
	{
		if( str3 == "URL - news source" ) str3 = "";
		if( str3 == "email" ) str4 = "";
		str1 = URLEncode( str1 );
		str2 = URLEncode( str2 );
		str3 = URLEncode( str3 );
		str4 = URLEncode( str4 );
		var strURL = "/news-save.php?newstitle=" + str1 + "&newsdesc=" + str2 + "&email=" + str3 + "&url=" + str4 + "";
		//alert( strURL );
		
		var xmlhttp = GetXMLHttp();
		
		xmlhttp.open( "POST", strURL, false );
		xmlhttp.send( null );	
		
		if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
		{
			UpdateNewsList();
		}
	}
	else
	{
		alert( "You fool... no story!?!?!" )
	}
}

function DeleteNews( nNewsID)
{
	if( nNewsID > 0 )
	{
		var strURL = "/news-del.php?mn=" + nNewsID;
		//alert( strURL );
		var xmlhttp = GetXMLHttp();
		
		xmlhttp.open( "POST", strURL, false );
		xmlhttp.send( null );	
		
		if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
		{
			//alert( xmlhttp.responseText );
			UpdateNewsList();
		}
	}
}


function URLEncode(url) //Function to encode URL.
{
	// The Javascript escape and unescape functions do not correspond
	// with what browsers actually do...
	var SAFECHARS = "0123456789" + // Numeric
	"ABCDEFGHIJKLMNOPQRSTUVWXYZ" + // Alphabetic
	"abcdefghijklmnopqrstuvwxyz" +
	"-_.!~*'()"; // RFC2396 Mark characters
	var HEX = "0123456789ABCDEF";

	var plaintext = url;
	var encoded = "";
	for (var i = 0; i < plaintext.length; i++ ) 
	{
		var ch = plaintext.charAt(i);
		if (ch == " ") 
		{
			encoded += "+"; // x-www-urlencoded, rather than %20
		}
		else if (SAFECHARS.indexOf(ch) != -1) 
		{
			encoded += ch;
		}
		else
		{
			var charCode = ch.charCodeAt(0);
			if (charCode > 255) 
			{
				alert( "Unicode Character '"
					+ ch
					+ "' cannot be encoded using standard URL encoding.\n" +
					"(URL encoding only supports 8-bit characters.)\n" +
					"A space (+) will be substituted." );
					encoded += "+";
			}
			else
			{
				encoded += "%";
				encoded += HEX.charAt((charCode >> 4) & 0xF);
				encoded += HEX.charAt(charCode & 0xF);
			}
		}
	}
	return encoded;
};


 

function URLDecode(url) //function decode URL
{
	// Replace + with ' '
	// Replace %xx with equivalent character
	// Put [ERROR] in output if %xx is invalid.
	var HEXCHARS = "0123456789ABCDEFabcdef";
	var encoded = url;
	var plaintext = "";
	var i = 0;
	while (i < encoded.length) 
	{
		var ch = encoded.charAt(i);
		if (ch == "+") 
		{
			plaintext += " ";
			i++;
		} 
		else if (ch == "%") 
		{
			if (i < (encoded.length-2)
				&& HEXCHARS.indexOf(encoded.charAt(i+1)) != -1
				&& HEXCHARS.indexOf(encoded.charAt(i+2)) != -1 ) 
			{
				plaintext += unescape( encoded.substr(i,3) );
				i += 3;
			} 
			else 
			{
				alert( 'Bad escape combination near ...' + encoded.substr(i) );
				plaintext += "%[ERROR]";
				i++;
			}
		}
		else
		{
			plaintext += ch;
			i++;
		}
	} // while

	return plaintext;
}; 


function FindTag( strTag, strObj )
{
	//find-tag.php?tag=strTag
	var strURL = "/find-tag.php?tag=" + strTag;
	//alert( strURL );
	var xmlhttp = GetXMLHttp();
	
	xmlhttp.open( "POST", strURL, false );
	xmlhttp.send( null );	
	
	if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
	{
		var obj;
		if( bIE7 || bIE6 )
		{
			obj = document.all( strObj );
		}
		else if( bFF || bOpera )
		{
			obj = document.getElementById( strObj );
		}
		obj.innerHTML = xmlhttp.responseText;
		//obj.src = xmlhttp.responseText;
		
		//alert( xmlhttp.responseText );
		//nPictureObjectID
		//alert( xmlhttp.responseText );
		//UpdateQuickMsgList(nUserID);
	}
}

function FindTag2( strTag, strObj, nMealID )
{
	//find-tag.php?tag=strTag
	var strURL = "/find-tag.php?tag=" + strTag + "&id=" + nMealID;
	//alert( strURL );
	var xmlhttp = GetXMLHttp();
	var obj1 = document.getElementById( strObj );
	obj1.innerHTML = "<img style='border: 0 white solid' src='/images/wait18trans.gif'>";
	
	xmlhttp.open( "POST", strURL, false );
	xmlhttp.send( null );	
	
	if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
	{
		var obj;
		if( bIE7 || bIE6 )
		{
			obj = document.all( strObj );
		}
		else if( bFF || bOpera )
		{
			obj = document.getElementById( strObj );
		}
		obj.innerHTML = xmlhttp.responseText;
		//obj.src = xmlhttp.responseText;
		
		//alert( xmlhttp.responseText );
		//nPictureObjectID
		//alert( xmlhttp.responseText );
		//UpdateQuickMsgList(nUserID);
	}
}


function WasEnterPressed( e )
{
	var keynum;
	var keychar;
	var numcheck;

	if( window.event ) // IE
	{
		keynum = e.keyCode;
	}
	else if( e.which ) // Netscape/Firefox/Opera
	{
		keynum = e.which;
	}
	return keynum == 13;
}

var g_nCurrentTag = 0;
function SelectCurrentTag( nTagID, strName )
{
	g_nCurrentTag = nTagID;
	// Update Tag Name
	var obj = document.getElementById( "taglist" );
	obj.innerHTML = "<br><h2>CURRENT TAG: <b style='color:red'>" + strName + "</b></h2>";
}

function TagMeal( nMealID, nCurrentTag, nRestore )
{
	if( !nCurrentTag ) return;
	var strURL = "/tagit-meal.php?t=" + nCurrentTag + "&n=" + nMealID + "&r=" + nRestore;
	
	var obj1 = document.getElementById( "ID_TAGS_" + nMealID );
	obj1.innerHTML = "<img style='border: 0 white solid' src='/images/wait18trans.gif'>";

	//alert( strURL );
	var xmlhttp = GetXMLHttp();
	xmlhttp.open( "POST", strURL, false );
	xmlhttp.send( null );	
	
	if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
	{
		var arr = xmlhttp.responseText.split("<#>");
		var strMealTagID = "ID_TAGS_" + arr[0];
		//alert( strMealTagID );
		var obj;
		obj = document.getElementById( strMealTagID );
		obj.innerHTML = arr[1];
		obj.innerHTML += "<br><div class=addtags style='font-size:12px'  id=tag_input_" + arr[0] + " name=tag_input_" + arr[0] + "><a href='javascript:GetTagInput(" + arr[0] + ")'>add a tag</a>" + 
			( nRestore ? "" : " (<a href='javascript:CancelAddTags(" + arr[0] + ")'>I'm done</a>)") + 
			"</div>";
	}

}



function GetCommentInput( nPictureID )
{
	var strCommentInput = 
		"	<input class=quickmsg " +
		"		id=quickmsg name=quickmsg " +
		"		onblur=\"if(this.value=='')this.value='Type here and Press Enter!'\" " +
		"		onclick=\"if(this.value=='Type here and Press Enter!')this.value=''\" " +
		"		value=\"Type here and Press Enter!\" " +
		"		onkeydown=\"if( WasEnterPressed(event) ) { SaveQuickmsg(" + nPictureID + ",this.value);this.value='';}\" " +
		"		maxlength=250 " +
		"		/>";
		
	var obj;
	obj = document.getElementById( "comment_input_" + nPictureID );
	obj.innerHTML = strCommentInput;
}

function GetTagInput( nPictureID )
{
	var strTagInput = "" +
		"<input class=tageditbox " +
		"	id=tag_" + nPictureID + " name=tag_" + nPictureID + " " +
		"	onblur=\"if(this.value=='')this.value='Type here and Press Enter to Search!'\" " +
		"	onclick=\"if(this.value=='Type here and Press Enter to Search!')this.value=''\" " +
		"	value='Type here and Press Enter to Search!'  " +
		"	onkeydown=\"if( WasEnterPressed(event) ) { FindTag2(this.value,'taglist_" + nPictureID + "'," + nPictureID + "); this.value=''; }\" " +
		"	maxlength=250 size=40" +
		"/> " +
		"<a href='javascript:CancelAddTags(" + nPictureID + ")'>cancel</a> " +
		"<div id=taglist_" + nPictureID + " name=taglist_" + nPictureID + " ></div><br> ";
		
	var obj;
	obj = document.getElementById( "tag_input_" + nPictureID );
	obj.innerHTML = strTagInput;
	
	//	do get the 25 most pop tags
	var strURL = "/find-pop-tags.php?id=" + nPictureID;
	
	//alert( strURL );
	var xmlhttp = GetXMLHttp();
	xmlhttp.open( "POST", strURL, false );
	xmlhttp.send( null );	
	
	if( xmlhttp.readyState == 4 && xmlhttp.status == 200 )
	{
		var arr = xmlhttp.responseText.split("<#>");
		var strMealTagID = "tag_input_" + nPictureID;
		
		var obj;
		obj = document.getElementById( strMealTagID );
		obj.innerHTML += "<h2>Popular Tags</h2><div>" + xmlhttp.responseText + "</div>";
	}
	
	obj.focus();
}

function CancelAddTags( nPictureID )
{
	/*var strTagInput = "<a href='javascript:GetTagInput(" + nPictureID + ")'>add a tag</a>";
		
	var obj;
	obj = document.getElementById( "tag_input_" + nPictureID );
	obj.innerHTML = strTagInput;
	obj.focus();*/
	TagMeal( nPictureID, 1, 1 );
}