//Browsers detection


//detect IE - version 7 or older
function detect_old_IE(){

var browser=navigator.appVersion;
browser = browser.toLowerCase();
var pos=browser.indexOf("msie");
if (pos!=-1){
	var str=browser.substr(pos+4,4);
	var version=parseInt(str);
	if (version<=7){
		//this is IE7 or older
		return true;
	}else{
		//this is IE8 or newer
		return false;
	}
}else{
	//this is not IE
	return false;
}
}


//detect any version of IE
function detect_IE(){

var browser=navigator.appVersion;
browser = browser.toLowerCase();
var pos=browser.indexOf("msie");
if (pos!=-1){
	return true;
}else{
	return false;
}

}


//detect any version of google chrome
function detect_chrome(){

var browser=navigator.appVersion;
browser = browser.toLowerCase();

var pos=browser.indexOf("chrome");
if (pos!=-1){
	//chrome
	//alert('chrome');
	return true;
}else{
	//not chrome
	return false;
}

}


//detect any version of FireFox
function detect_FF(){

var browser=navigator.userAgent;
browser = browser.toLowerCase();

var pos=browser.indexOf("firefox");
if (pos!=-1){
	//FF
	return true;
}else{
	//not FF
	return false;
}

}