version=parseInt(navigator.appVersion);
if (navigator.appVersion.indexOf('5.')>-1){version=5}; browser='OTHER'; 
if (navigator.appName=='Netscape'){browser='NS'+version;} 
if (navigator.appName=='Microsoft Internet Explorer'){browser='MSIE'+version;} 
if (navigator.appVersion.indexOf('MSIE 3')>0) {browser='MSIE3';} 
if (browser=='NS5'){browser='NS6'};
if (browser=='MSIE3') {document.write('<link rel="stylesheet" type="text/css" href="http://www.amtelco.com/style_amtelco.css">');}
if (browser=='MSIE4') {document.write('<link rel="stylesheet" type="text/css" href="http://www.amtelco.com/style_amtelco.css">');}
if (browser=='MSIE5') {document.write('<link rel="stylesheet" type="text/css" href="http://www.amtelco.com/style_amtelco.css">');}
if (browser=='MSIE6') {document.write('<link rel="stylesheet" type="text/css" href="http://www.amtelco.com/style_amtelco.css">');}
if (browser=='NS3') {document.write('<link rel="stylesheet" type="text/css" href="http://www.1call.com/styleNS4_1call.css">');}
if (browser=='NS4') {document.write('<link rel="stylesheet" type="text/css" href="http://www.1call.com/styleNS4_1call.css">');}
if (browser=='NS6') {document.write('<link rel="stylesheet" type="text/css" href="http://www.amtelco.com/style_amtelco.css">');}
if (browser=='OTHER') {document.write('<link rel="stylesheet" type="text/css" href="http://www.1call.com/styleNS4_1call.css">');}