//need jquery to work 
function markConfigurationToBody(){
	//os
	osDesc="os";
	var appVersion=navigator.appVersion;
	if (appVersion.indexOf("Win")!=-1){
		osDesc="windows";
	}else if (appVersion.indexOf("Mac")!=-1){
		osDesc="macos";
	}
	
	//browser
	browserDesc="browser";
	var agt=navigator.userAgent.toLowerCase();
	if(agt.indexOf("firefox") != -1){
		browserDesc="firefox";
	}
	if(agt.indexOf("safari") != -1){
		browserDesc="safari";
	}
	if(agt.indexOf("chrome") != -1){
		browserDesc="chrome";
	}
	if(/MSIE (\d+\.\d+);/.test(navigator.userAgent)){
		var ver=0;
		var re=new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
   		if(re.exec(navigator.userAgent) != null){	ver = parseFloat(RegExp.$1);	}
	
		if(ver < 7.0){	
			browserDesc="ie6";
		}else if(ver < 8.0){	
			browserDesc="ie7";
		}else if(ver < 9.0){	
			browserDesc="ie8";
		}else if(ver < 10.0){	
			browserDesc="ie9";
		}
	}
	browserDescGlobal=browserDesc;

	//marquage
	document.getElementsByTagName('body')[0].className+=" "+osDesc;
	document.getElementsByTagName('body')[0].className+=" "+browserDesc;
	//alert(document.getElementsByTagName('body')[0].className);
}
//window.onload = markConfigurationToBody;
markConfigurationToBody();