/* main.js */ var dc = {}; dc.tools = {}; dc.tools.getStyle = function( obj,attr ){ return obj.currentStyle ? obj.currentStyle[attr] : getComputedStyle( obj,false )[attr]; }; dc.tools.getByClass = function( oParent,sClass ){ var aEle = oParent.getElementsByTagName( '*' ); var arr = []; for( var i=0;i tar && dir > 0 || iSpeed < tar && dir < 0 ){ iSpeed = tar; } obj.style[attr] = iSpeed + 'px'; if( iSpeed == tar ){ clearInterval( obj.timer ); endFn && endFn(); } }, 50 ); }; dc.app = {}; dc.app.toBanner = function(){ var oBanner = document.getElementById( 'banner' ); var oUl = oBanner.getElementsByTagName( 'ul' )[0]; var aLi = oUl.getElementsByTagName( 'li' ); var oScroll_nav = dc.tools.getByClass( oBanner,'scroll_nav' )[0]; var aA = oScroll_nav.getElementsByTagName( 'a' ); var iNow = 0; aLi[0].style.opacity = 1; aLi[0].style.filter = 'alpha( opacity=100 )'; var timer = setInterval( auto,3000 ); function auto(){ if( iNow == aLi.length-1 ){ iNow = 0; }else{ iNow++; } for( var i=0;i