navigatorCheck = function(){
	this.browser = navigator.userAgent;
	this.browserList = {'IE':'MSIE','FF':'Firefox','O':'Opera','S':'Safari'};
	this.checkName = function($name){
		for(var bN in this.browserList){
			if(bN == $name){
				if(this.browser.indexOf(this.browserList[bN])>-1)
					return true;
			}
		}
		return false;
	}	
	this.checkVersion = function($name,$number){
		for(var bN in this.browserList){
			if(bN == $name){
				var cVr = 'N\A';
				var cV = this.browserList[bN]+' '+new String($number);
				if(this.browser.indexOf(cV)>-1){
					cVr = 'OK';
				}else{
					cV = this.browserList[bN]+'/'+new String($number);
					if(this.browser.indexOf(cV)>-1){
						cVr = 'OK';
					}else{
						cVr = 'N\A';
					}	
				}	
				if(cVr == 'OK')
					return true;
			}
		}
		return false;
	}
}
var nC = new navigatorCheck();