function pick_css(){
  var browser;
  try{
    browser = getBrowser();
  }
  catch(M){
    alert("Missing getBrowser() from brnsniff.js");
    return;
  } 
  //alert(browser[0]+":"+browser[1]);
  switch (browser[0]){
    case "msie" :
      // IE6
      if(/^6\.[0-9]+/.test(browser[1])){
        document.write("<link href='http://www.structuralmedicine.com/css/ism-IE6.css' rel='stylesheet' type='text/css' media='screen'  \/>");
      }   
      // IE7
      else if(/^7\.[0-9]+/.test(browser[1])){
        document.write("<link href='http://www.structuralmedicine.com/css/ism-IE7.css' rel='stylesheet' type='text/css' media='screen'  \/>");
      }   
      // IE8
      else if(/^8\.[0-9]+/.test(browser[1])){
        document.write("<link href='http://www.structuralmedicine.com/css/ism-IE8.css' rel='stylesheet' type='text/css' media='screen'  \/>");
      }
      else{
      }
      break;

    case "safari" :
      document.write("<link href='http://www.structuralmedicine.com/css/ism-safari.css' rel='stylesheet' type='text/css' media='screen'  \/>");
      break;

    case "firefox" :
      document.write("<link href='http://www.structuralmedicine.com/css/ism-firefox.css' rel='stylesheet' type='text/css' media='screen'  \/>");
      break;
  } 
}
pick_css();