function browserDetect() {

 var browserNames=new Array("Opera", "MSIE","Netscape","Firefox","Safari","Chrome");
 this.name="NK";
 this.mainVersion="NK";
 this.minorVersion="NK";
 
 for (var i=0; i< browserNames.length; i++)
 {
  var pattern='('+browserNames[i]+')'+'.([0-9]+)\.([0-9]+)';    
  var myRegExp=new RegExp(pattern);
  if (myRegExp.test(navigator.userAgent))
   {
     var results=myRegExp.exec(navigator.userAgent);
     this.name=results[1];
     this.mainVersion=results[2];
     this.minorVersion=results[3];
     break;
   }
 }
} 

var browser = new browserDetect();  

{
	if (browser.name == 'MSIE' && browser.mainVersion == 6)
	{
		document.write('<link rel="stylesheet" type="text/css" media="screen" href="stylesheets/stylesh-ie6.css">');
		document.write('<link rel="stylesheet" type="text/css" media="print" href="stylesheets/print.css">');
	}
	else
	if (browser.name == 'MSIE' && browser.mainVersion  == 7)
	{
		document.write('<link rel="stylesheet" type="text/css" media="screen" href="stylesheets/stylesh-ie.css">');
		document.write('<link rel="stylesheet" type="text/css" media="print" href="stylesheets/print.css">');
	}
	else
	if(browser.name == 'MSIE' && browser.mainVersion  > 7)
	{
		document.write('<link rel="stylesheet" type="text/css" media="screen" href="stylesheets/stylesh-ie8.css">');
		document.write('<link rel="stylesheet" type="text/css" media="print" href="stylesheets/print.css">');
	}
	else
	if(browser.name == 'Netscape' || browser.name == 'Firefox' || browser.name == 'Opera') 	
	{
		document.write('<link rel="stylesheet" type="text/css" media="screen" href="stylesheets/stylesh-nn.css">');
		document.write('<link rel="stylesheet" type="text/css" media="print" href="stylesheets/print.css">');
	}
	else
	if(browser.name == 'Safari') 	
	{
		document.write('<link rel="stylesheet" type="text/css" media="screen" href="stylesheets/stylesh-sa.css">');
		document.write('<link rel="stylesheet" type="text/css" media="print" href="stylesheets/print.css">');
	}
	else
	if(browser.name == 'Chrome') 	
	{
		document.write('<link rel="stylesheet" type="text/css" media="screen" href="stylesheets/stylesh-nn.css">');
		document.write('<link rel="stylesheet" type="text/css" media="print" href="stylesheets/print.css">');
	}
}