- var ns_pos=(typeof window.pageYOffset!="undefined");var khtml=((navigator.userAgent).indexOf("KHTML")>=0?true:false);var opera=((navigator.userAgent).indexOf("Opera")>=0?true:false);var ie=(typeof document.all!="undefined"&&!opera);var ie7=(!ns_pos&&navigator.userAgent.indexOf("MSIE 7")!=-1);var ie8=(!ns_pos&&navigator.userAgent.indexOf("MSIE 8")!=-1);var slidy_started=false;if(ie&&!ie8){document.write("<iframe id='historyFrame' src='javascript:\"<html></html>\"' height='1' width='1' style='position:absolute;left:-800px'></iframe>")}if(typeof beforePrint!="undefined"){window.onbeforeprint=beforePrint;window.onafterprint=afterPrint}if(ie){setTimeout(ieSlidyInit,100)}else{if(document.addEventListener){document.addEventListener("DOMContentLoaded",startup,false)}}function ieSlidyInit(){if(document.readyState=="complete"||document.readyState=="loaded"){startup()}else{setTimeout(ieSlidyInit,100)}}setTimeout(hideSlides,50);function hideSlides(){if(document.body){document.body.style.visibility="hidden"}else{setTimeout(hideSlides,50)}}var slidenum=0;var slides;var slideNumElement;var notes;var backgrounds;var toolbar;var title;var lastShown=null;var eos=null;var toc=null;var outline=null;var selectedTextLen;var viewAll=0;var wantToolbar=1;var mouseClickEnabled=true;var scrollhack=0;var key_wanted=false;var helpAnchor;var helpPage="http://www.w3.org/Talks/Tools/Slidy/help.html";var helpText="Navigate with mouse click, space bar, Cursor Left/Right, or Pg Up and Pg Dn. 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