/**
Browser Detection and Key Handler Module.  It has followins features
	- Detect kind of browser
	- Handle keypress scan codes


Written by Veeresh D.

*/
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();

function getBrowserTypeId()
{
	
}
function getBrowserName()
{
	return BrowserDetect.browser;
}
function getBrowserVersion()
{
	return BrowserDetect.version;
}
function getBrowserOS()
{
	return BrowserDetect.OS;
}


function getBrowserKeyEventCode(e)
{
	var bname = getBrowserName();
	var genericKey;
	if ( bname == "Explorer" || bname == "Opera" || bname == "Safari")
	{
		genericKey = window.event.keyCode; // + " [Char keycode] " +" , Char: " + String.fromCharCode(window.event.keyCode);
	}
	else if ( bname == "Firefox" || bname == "Netscape" )
	{
		if (e.keyCode)
		{
			genericKey = e.keyCode; // + " [Control keycode]" 			
		}
		else if (e.charCode)
			genericKey = e.charCode; // + " [Char keycode] " +" , Char: " + String.fromCharCode(e.charCode);
	}
	return genericKey;	
}

function cancelBrowserKeyEventCode(e)
{
	var bname = getBrowserName();
	if ( bname == "Explorer" || bname == "Opera" || bname == "Safari")
	{
		window.event.keyCode="";
	}
	else if ( bname == "Firefox" || bname == "Netscape" )
	{
		if (e.keyCode)
		{
			e.keyCode = ""; 
		}
		else if (e.charCode)
			e.charCode = ""; 
	}
}