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: "Chrome",
			identity: "Chrome"
		},
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			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.userAgent,
			   subString: "iPhone",
			   identity: "iPhone/iPod"
	    },
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();


var np_x = 0;
var np_y = 0;
var np_target = false;

function np_body_height()
{
	if (self.innerHeight)
	{
		return self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight)
	{
		return document.documentElement.clientHeight;
	}
	else if (document.body) // other Explorers
	{
		return document.body.clientHeight;
	}
}

function np_unlock()
{
	if(!np_target)
	{
		np_target = document.getElementById("nesplayer");
		np_target.style.position = "absolute";
		np_target.style.width = "190px";
		np_target.style.height = "160px";
		if(BrowserDetect.browser == "Explorer")
		{
			if(BrowserDetect.version >= 7)
			{
				np_target.style.bottom = (np_body_height() - 160 - np_target.offsetTop) + "px";
			}
			np_x = np_target.offsetLeft;
			np_y = np_target.offsetTop + 160;
		}
		else
		{
			var obj = document.getElementById("nesplayer_container");
			np_y = 0;
			if(obj.offsetParent)
			while(1) 
			{
				np_y += obj.offsetTop;
				if(!obj.offsetParent) break;
				obj = obj.offsetParent;
			}
			else if(obj.x)
			{
				np_x += obj.x;
			}
			np_y += 160;
			np_target.style.bottom = (np_body_height() - np_y) + "px";
		}
	}
}

function np_begin()
{
}

function np_moveleft(p)
{
	np_target.style.left = (np_x + p) + "px";
}

function np_end()
{
	if(BrowserDetect.browser == "Explorer" && BrowserDetect.version >= 7)
	{
		np_moveleft(1);
		setTimeout("np_moveleft(0)", 500);
	}
}

function np_get_width()
{
	return 190;
}

function np_get_height()
{
	return 160;
}

function np_set_size(w, h)
{
	np_target.style.width = w + "px";
	np_target.style.height = h + "px";
	if(BrowserDetect.browser == "Explorer" && BrowserDetect.version < 7)
	{
		np_target.style.top = (np_y - h) + "px";
	}
}