text: /*图片切换*/
  function addLoadEvent(func) {
  	var oldonload = window.onload;
  	if (typeof window.onload != 'function') {
  		
  	} else {
  		window.onload = function() {
  			oldonload();
  			func();
  		}
  	}
  }
  function Focus() {
  	function byid(id) {
  		return document.getElementById(id);
  	}
  	function bytag(tag, obj) {
  		return (typeof obj == 'object' ? obj: byid(obj)).getElementsByTagName(tag);
  	}
  	var timer = null;
  	var oFocus = byid('tFocus');
  	var oPic = byid('tFocus-pic');
  	var oPicLis = bytag('li', oPic);
  	var oBtn = byid('tFocus-btn');
  	var oBtnLis = bytag('li', oBtn);
  	var iActive = 0;
  	function inlize() {
  		oPicLis[0].style.filter = 'alpha(opacity:100)';
  		oPicLis[0].style.opacity = 100;
  		oPicLis[0].style.zIndex = 5;
  	};
  	for (var i = 0; i < oPicLis.length; i++) {
  		oBtnLis[i].sIndex = i;
  		oBtnLis[i].onclick = function() {
  			if (this.sIndex == iActive) return;
  			iActive = this.sIndex;
  			changePic();
  		}
  	};
  	byid('tFocus-leftbtn').onclick = byid('prev').onclick = function() {
  		iActive--;
  		if (iActive == -1) {
  			iActive = oPicLis.length - 1;
  		}
  		changePic();
  	};
  	byid('tFocus-rightbtn').onclick = byid('next').onclick = function() {
  		iActive++;
  		if (iActive == oPicLis.length) {
  			iActive = 0;
  		}
  		changePic();
  	};
  	
  	function changePic() {
  		for (var i = 0; i < oPicLis.length; i++) {
  			doMove(oPicLis[i], 'opacity', 0);
  			oPicLis[i].style.zIndex = 0;
  			oBtnLis[i].className = '';
  		};
  		doMove(oPicLis[iActive], 'opacity', 100);
  		oPicLis[iActive].style.zIndex = 5;
  		oBtnLis[iActive].className = 'active';
  		if (iActive == 0) {
  			doMove(bytag('ul', oBtn)[0], 'left', 0);
  		} else if (iActive >= oPicLis.length - 2) {
  			doMove(bytag('ul', oBtn)[0], 'left', -(oPicLis.length - 3) * (oBtnLis[0].offsetWidth + 4));
  		} else {
  			doMove(bytag('ul', oBtn)[0], 'left', -(iActive - 1) * (oBtnLis[0].offsetWidth + 4));
  		}
  	};
  	function autoplay() {
  		if (iActive >= oPicLis.length - 1) {
  			iActive = 0;
  		} else {
  			iActive++;
  		}
  		changePic();
  	};
  	aTimer = setInterval(autoplay, 2000);
  	inlize();
  	function getStyle(obj, attr) {
  		if (obj.currentStyle) {
  			return obj.currentStyle[attr];
  		} else {
  			return getComputedStyle(obj, false)[attr];
  		}
  	};
  	function doMove(obj, attr, iTarget) {
  		clearInterval(obj.timer);
  		obj.timer = setInterval(function() {
  			var iCur = 0;
  			if (attr == 'opacity') {
  				iCur = parseInt(parseFloat(getStyle(obj, attr)) * 100);
  			} else {
  				iCur = parseInt(getStyle(obj, attr));
  			}
  			var iSpeed = (iTarget - iCur) / 6;
  			iSpeed = iSpeed > 0 ? Math.ceil(iSpeed) : Math.floor(iSpeed);
  			if (iCur == iTarget) {
  				clearInterval(obj.timer);
  			} else {
  				if (attr == 'opacity') {
  					obj.style.filter = 'alpha(opacity:' + (iCur + iSpeed) + ')';
  					obj.style.opacity = (iCur + iSpeed) / 100;
  				} else {
  					obj.style[attr] = iCur + iSpeed + 'px';
  				}
  			}
  		},
  		30)
  	};
  	byid('tFocus').onmouseover = function() {
  		clearInterval(aTimer);
  	}
  	byid('tFocus').onmouseout = function() {
  		aTimer = setInterval(autoplay, 2000);
  	}
  }