function BrowserCheck() { 
	var b = navigator.appName 
	if (b=="Netscape") this.b = "ns" 
		else if (b=="Microsoft Internet Explorer") this.b = "ie" 
			else this.b = b 

	this.v = parseInt(navigator.appVersion) 
	this.ns = (this.b=="ns" && this.v>=4) 
	this.ns4 = (this.b=="ns" && this.v==4) 
	this.ns5 = (this.b=="ns" && this.v==5) 
	this.ie = (this.b=="ie" && this.v>=4) 
	this.ie4 = (navigator.userAgent.indexOf('MSIE 4')>0) 
	this.ie5 = (navigator.userAgent.indexOf('MSIE 5')>0) 
	if (this.ie5) this.v = 5 
	this.min = (this.ns||this.ie) 
} 

var is = new BrowserCheck();

if(is.ie || is.ns5){
	document.write("<link rel='stylesheet' type='text/css' href='http://www.nec-online.co.uk/styles/style_ie.css'>");
}
else if(is.ns){
	document.write("<link rel='stylesheet' type='text/css' href='http://www.nec-online.co.uk/styles/style_net.css'>");
}