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.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"
		},
		{	// 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();

//alert(BrowserDetect.browser);

//alert(BrowserDetect.version);

var IE6;
if(BrowserDetect.browser=='Explorer'&&BrowserDetect.version>=6)
IE6 = true;
else
IE6 = false;	

var Mozilla5;
if(BrowserDetect.browser=='Mozilla'&&BrowserDetect.version>=5)
Mozilla5 = true;
else
Mozilla5 = false;

var Firefox15;
if(BrowserDetect.browser=='Firefox'&&BrowserDetect.version>=1.5)
Firefox15 = true;
else
Firefox15 = false;


var netscape8;
if(BrowserDetect.browser=='Netscape'&&BrowserDetect.version>=8)
netscape8 = true;
else
netscape8 = false;
 



function setImage(name, new_src, layer)
{
        // version test
        if ((navigator.appName == 'Netscape' && parseFloat(navigator.appVersion) >= 3) ||
                (parseFloat(navigator.appVersion) >= 4)
        ) {
                if (!document.layers || !layer)
                        eval('document.' + name + '.src = "' + new_src + '"');
                else
                        document.layers[layer].document.images[name].src = new_src;
        };
}


var layer_timer = 0;
var layer_stack = new Array();

function setLayerVisible(name, visible, image_name, image_data)
{
        
        if(IE6||Mozilla5||Firefox15||netscape8){
        
        var layer = document.layers?document.layers[name]:document.all?document.all[name]:document.getElementById(name);

		//override
		var ifrm = document.getElementById("frmMain");
		var ifrm = document.getElementById("frmMains");
		var ifrms = document.getElementById("frmMainss");
        
		
		// hide stacked layers
        while ((layer_stack.length > 1) && ((visible == -1) || ((visible == 1) && (layer_stack[layer_stack.length - 2] != name)))) {
                // if stacked layer is picture (data part is not empty)
                if (layer_stack[layer_stack.length - 1] != "") {
                        setImage(
                               layer_stack[layer_stack.length - 2],
                                layer_stack[layer_stack.length - 1],
                                (layer_stack.length > 3)?layer_stack[layer_stack.length - 4]:""
                        );
                        layer_stack.length -= 2;
                } else setLayerVisible(layer_stack[layer_stack.length - 2], -2);        };

        switch (visible) {
        case 1:
        case 2:
                clearTimeout(layer_timer);

                // push layer
                if (layer_stack[layer_stack.length - 2] != name) {
                        // store image first if defined
                        if (image_name) {
                                layer_stack[layer_stack.length] = image_name;
                                layer_stack[layer_stack.length] = image_data;
                        };

                        layer_stack[layer_stack.length] = name;
                        layer_stack[layer_stack.length] = "";
                };

                // show layer
                if (!layer) return;
                if (document.layers) layer.visibility = "show";
                else layer.style.visibility = "visible";

				//override
		
				
				if (name == "m01")
					ifrm.style.display = "block";
				if (name == "m02")
					ifrm.style.display = "block";
				if (name == "m04")
					ifrms.style.display = "block";
				

                break;
        case 0:
                // set hide timer to 0.5 second
                clearTimeout(layer_timer);
                layer_timer = setTimeout("setLayerVisible('" + name + "', -1)", 500);
                break;
        default:
                // remove layer from stack
                if (layer_stack.length > 1) layer_stack.length -= 2;
                else layer_stack.length = 0;

                // hide layer
                if (!layer) return;
                if (document.layers) layer.visibility = "hide";
                else layer.style.visibility = "hidden";
				
				//override
			
				if (name == "m01")
					ifrm.style.display = "none";
				if (name == "m02")
					ifrm.style.display = "none";
				if (name == "m04")
					ifrms.style.display = "none";
			
                // Hack :( to hide background

        }; // switch (visible)
	}//end if
} // function setLayerVisible(name, visible, image_name, image_data)