//ブラウザ判定
function checkBrows(){
	var userAgent = navigator.userAgent;
	var OS;
	var Browser;
	if(userAgent.indexOf("Mac") >= 0){
		OS = "mac";
	}else if(userAgent.indexOf("Win") >= 0){
		OS = "windows";
	}
	if(userAgent.match(/MSIE/)){
		if(userAgent.match(/6/)){
			Browser = "InternetExplorer6";
		}else if(userAgent.match(/7/)){
			Browser = "InternetExplorer7";
		}else{
			Browser = "InternetExplorer";
		}
	}else if(userAgent.match(/Mozilla/)){
		Browser = "FireFox";
	}else if(userAgent.match(/Netscape/)){
		Browser = "Netscape";
	}else if(userAgent.match(/Safari/)){
		Browser = "Safari";
	}
	return OS +" "+ Browser;
}