version=parseInt(navigator.appVersion);
if (navigator.appVersion.indexOf('5.')>-1){version=5};
if (navigator.appVersion.indexOf('6.')>-1){version=6};
 if (navigator.appVersion.indexOf('7.')>-1){version=7};
  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=='MSIE7') {document.write("<link rel=\"stylesheet\" href=\"css/ie7.css\" media=\"screen\" type=\"text\/css\"/>");}
    if (browser=='MSIE6') {document.write("<link rel=\"stylesheet\" href=\"css/ie6.css\" media=\"screen\" type=\"text\/css\"/>");}  
	 if (navigator.appVersion.toLowerCase().indexOf("mac") > 0) {document.write("<link rel=\"stylesheet\" href=\"css/mac.css\" media=\"screen\" type=\"text\/css\"/>");}