Mobile Web page Font size three

<ScriptType="Text/javascript" >(function(Doc, Win) {var docel = doc.documentelement, resizeevt =' Orientationchange 'InchWindow?' Orientationchange ': ' resize ', Recalc = function  () {var clientwidth = docel.clientwidth; if (!clientwidth) return; docEl.style.fontSize = 64 * (clientwidth/640) +  ' px ';}; if (!doc.addeventlistener) return; Win.addeventlistener (RESIZEEVT, Recalc , false); Doc.addeventlistener ( ' domcontentloaded ', Recalc, false);}) (document, window); </SCRIPT>         

Among them, docEl.style.fontSize = 64 * (clientWidth / 640) + ‘px‘ 64 is html set in font-size , 640 is psd the image width, also said if PSD the design 750px, then this side is 75px . You can try it, the last html font size that comes into effect is the same as the font size on the http://m.taobao.com html .
PS: The first person to answer the question, use your code.

Mobile Web page Font size three