function gAjaxFailure( t )
{
	var debug = false;
	var message = 'AJAX failure: Error ' + t.status + ' -- ' + t.statusText;
	alert( message + ( debug ? '\n\n' + t.responseText : '' ) );
	gLogException( new Error( message ), message + '\n\nContent Returned:\n\n' + t.responseText );
}


function gEvalJSON( t, functionName )
{
	try
	{
		
		return t.responseText.evalJSON();
	}
	catch( ex )
	{
		
		if( ex != 'End' )
			gLogException( ex, "Error in " + functionName + "(). Response Text: " + t.responseText );
	}
}


function gIsValidJSON( t )
{
	try
	{
		t.responseText.evalJSON( true );
		return true;
	}
	catch( ex )
	{
		return false;
	}
}


function gHighlightErrorFields( errorFields, listItemId )
{
	if( errorFields != null )
	{
		
		for( var i=0; i < errorFields.length; i++ )
		{
			try
			{
				$( errorFields[ i ] + listItemId ).style.backgroundColor = '#FF6699';
			}
			catch( ex ) {  }
		}
	}
}



function gClearHighlightedErrorFields( theForm )
{
	for( var i = 0; i < theForm.elements.length; i++ )
	{
		if( theForm.elements[i].type == "text" || theForm.elements[i].type == "textarea" || theForm.elements[i].type == "password" || theForm.elements[i].type == "select-one" )
			
		{
			theForm.elements[i].style.backgroundColor = '#FFFFFF';
		}
	}
}


function gFocusFirstErrorField( errorFields, listItemId )
{
	try
	{
		$( errorFields[ 0 ] + listItemId ).focus();
	}
	catch( ex ) {  }
}


function gLogException( ex, message )
{
	var opt =
	{
		method: 'post',
		postBody: "logJavaScriptException=true&exception=" + ex.message + "&message=" + escape( message )
	}
	
	new Ajax.Request( '/code/utils_code.jsp', opt );
}


function gLogError( comment, message )
{
	var opt =
	{
		method: 'post',
		postBody: "logJavaScriptException=true&exception=" + comment + "&message=" + escape( message )
	}
	
	new Ajax.Request( '/code/utils_code.jsp', opt );
}



var BrowserDetect =
{
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();