if(navigator.userAgent.indexOf('MSIE 5') >= 0 && navigator.userAgent.indexOf('Mac') == -1) {
  document.write('<link rel=\"stylesheet\" type=\"text/css\" href=\"fileadmin/template/css/text_normal_ie5.css\">');
 }

if(navigator.userAgent.indexOf('MSIE') >= 0 && navigator.userAgent.indexOf('Mac') >= 0) {
  document.write('<link rel=\"stylesheet\" type=\"text/css\" href=\"fileadmin/template/css/browser/ie_mac.css\">');
 } else {
  if(navigator.userAgent.indexOf('MSIE 5') >= 0) {
    document.write('<link rel=\"stylesheet\" type=\"text/css\" href=\"fileadmin/template/css/browser/ie5.css\">');
  } else {
    if(navigator.userAgent.indexOf('MSIE') >= 0 && navigator.userAgent.indexOf('Mac') == -1) {
      if (navigator.userAgent.indexOf('MSIE 6') >= 0) {
        document.write('<link rel=\"stylesheet\" type=\"text/css\" href=\"fileadmin/template/css/browser/ie6.css\">');        
      }
      else if (navigator.userAgent.indexOf('MSIE 7') >= 0) {
        document.write('<link rel=\"stylesheet\" type=\"text/css\" href=\"fileadmin/template/css/browser/ie7.css\">');
      }
      else if (navigator.userAgent.indexOf('MSIE 8') >= 0) {
        document.write('<link rel=\"stylesheet\" type=\"text/css\" href=\"fileadmin/template/css/browser/ie8.css\">');
      }
    }
  }
 }

if(navigator.userAgent.indexOf('Safari') >= 0) {
  document.write('<link rel=\"stylesheet\" type=\"text/css\" href=\"fileadmin/template/css/browser/safari.css\">');
 }

if(navigator.userAgent.indexOf('Mozilla') >= 0 && navigator.userAgent.indexOf('MSIE') == -1) {
  document.write('<link rel=\"stylesheet\" type=\"text/css\" href=\"fileadmin/template/css/browser/mozilla.css\">');
 }