//图片放大效果
var userAgent = navigator.userAgent.toLowerCase();
var is_opera = userAgent.indexOf('opera') != -1 && opera.version();
var is_moz = (navigator.product == 'Gecko') && userAgent.substr(userAgent.indexOf('firefox') + 8, 3);
var is_ie = (userAgent.indexOf('msie') != -1 && !is_opera) && userAgent.substr(userAgent.indexOf('msie') + 5, 3);
if(is_moz && window.HTMLElement) {
	HTMLElement.prototype.__defineSetter__('outerHTML', function(sHTML) {
        	var r = this.ownerDocument.createRange();
		r.setStartBefore(this);
		var df = r.createContextualFragment(sHTML);
		this.parentNode.replaceChild(df,this);
		return sHTML;
	});

	HTMLElement.prototype.__defineGetter__('outerHTML', function() {
		var attr;
		var attrs = this.attributes;
		var str = '<' + this.tagName.toLowerCase();
		for(var i = 0;i < attrs.length;i++){
			attr = attrs[i];
			if(attr.specified)
			str += ' ' + attr.name + '="' + attr.value + '"';
		}
		if(!this.canHaveChildren) {
			return str + '>';
		}
		return str + '>' + this.innerHTML + '</' + this.tagName.toLowerCase() + '>';
        });

	HTMLElement.prototype.__defineGetter__('canHaveChildren', function() {
		switch(this.tagName.toLowerCase()) {
			case 'area':case 'base':case 'basefont':case 'col':case 'frame':case 'hr':case 'img':case 'br':case 'input':case 'isindex':case 'link':case 'meta':case 'param':
			return false;
        	}
		return true;
	});
	HTMLElement.prototype.click = function(){
		var evt = this.ownerDocument.createEvent('MouseEvents');
		evt.initMouseEvent('click', true, true, this.ownerDocument.defaultView, 1, 0, 0, 0, 0, false, false, false, false, 0, null);
		this.dispatchEvent(evt);
	}
}
function $(id) {
	return document.getElementById(id);
}
function doane(event) {
	e = event ? event : window.event;
	if(is_ie) {
		e.returnValue = false;
		e.cancelBubble = true;
	} else if(e) {
		e.stopPropagation();
		e.preventDefault();
	}
}
function fetchOffset(obj) {
	var left_offset = obj.offsetLeft;
	var top_offset = obj.offsetTop;
	while((obj = obj.offsetParent) != null) {
		left_offset += obj.offsetLeft;
		top_offset += obj.offsetTop;
	}
	return { 'left' : left_offset, 'top' : top_offset };
}
////////////////////////////////////////////////////
var zoomobj = Array();var zoomadjust;var zoomstatus = 1;

function zoom(obj, zimg) {
	if(!zoomstatus) {
		window.open(zimg, '', '');
		return;
	}
	if(!zimg) {
		zimg = obj.src;
	}
	if(!$('zoomimglayer_bg')) {
		div = document.createElement('div');div.id = 'zoomimglayer_bg';
		div.style.position = 'absolute';
		div.style.left = div.style.top = '0px';
		div.style.zIndex = '998';
		div.style.width = document.body.clientWidth;
		div.style.height = document.body.scrollHeight + 'px';
		div.style.backgroundColor = '#000';
		div.style.display = 'none';
		div.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=80,finishOpacity=100,style=0)';
		div.style.opacity = 0.8;
		$('append_parent').appendChild(div);
		div = document.createElement('div');
		div.id = 'zoomimglayer';
		div.style.position = 'absolute';
		div.style.padding = 0;
		$('append_parent').appendChild(div);
	}
	zoomobj['srcinfo'] = fetchOffset(obj);
	zoomobj['srcobj'] = obj;
	zoomobj['zimg'] = zimg;
	zoomobj['id'] = 'zoom_' + Math.random();
	$('zoomimglayer').setAttribute('pid', obj.getAttribute('pid'));
	$('zoomimglayer').style.display = '';
	$('zoomimglayer').style.left = zoomobj['srcinfo']['left'] + 'px';
	$('zoomimglayer').style.top = zoomobj['srcinfo']['top'] + 'px';
	$('zoomimglayer').style.width = zoomobj['srcobj'].width + 'px';
	$('zoomimglayer').style.height = zoomobj['srcobj'].height + 'px';
	$('zoomimglayer').style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=40)';
	$('zoomimglayer').style.opacity = 0.4;
	$('zoomimglayer').style.zIndex = '999';
	$('zoomimglayer').innerHTML = '<table width="100%" height="100%" cellspacing="0" cellpadding="0"><tr><td align="center" valign="middle"><img src="/images/website/loading.gif"></td></tr></table><div style="position:absolute;top:-100000px;display:none"><img id="' + zoomobj['id'] + '" src="' + zoomobj['zimg'] + '"></div>';
	setTimeout('zoomimgresize($(\'' + zoomobj['id'] + '\'))', 100);
	if(is_ie) {
		doane(event);
	}
}

var zoomdragstart = new Array();
var zoomclick = 0;
function zoomdrag(e, op) {
	if(op == 1) {
		zoomclick = 1;
		zoomdragstart = is_ie ? [event.clientX, event.clientY] : [e.clientX, e.clientY];
		zoomdragstart[2] = parseInt($('zoomimglayer').style.left);
		zoomdragstart[3] = parseInt($('zoomimglayer').style.top);
		doane(e);
	} else if(op == 2 && zoomdragstart[0]) {
		zoomclick = 0;
		var zoomdragnow = is_ie ? [event.clientX, event.clientY] : [e.clientX, e.clientY];
		$('zoomimglayer').style.left = (zoomdragstart[2] + zoomdragnow[0] - zoomdragstart[0]) + 'px';
		$('zoomimglayer').style.top = (zoomdragstart[3] + zoomdragnow[1] - zoomdragstart[1]) + 'px';
		doane(e);
	} else if(op == 3) {
		if(zoomclick) zoomclose();
		zoomdragstart = [];
		doane(e);
	}
}
function zoomSTddf(obj, zimg)  {
	if(!zoomstatus) {
		window.open(zimg, '', '');
		return;
	}
	if(!zimg) {
		zimg = obj.src;
	}
	alert(zimg.width);
	//
	if(!$('zoomimglayer_bg')) {
		div = document.createElement('div');div.id = 'zoomimglayer_bg';
		div.style.position = 'absolute';
		div.style.left = div.style.top = '0px';
		div.style.zIndex = '998';
		div.style.width = '100%';
		div.style.height = document.body.scrollHeight + 'px';
		div.style.backgroundColor = '#000';
		div.style.display = 'none';
		div.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=80,finishOpacity=100,style=0)';
		div.style.opacity = 0.8;
		$('append_parent').appendChild(div);
		div = document.createElement('div');
		div.id = 'zoomimglayer';
		div.style.position = 'absolute';
		div.style.padding = 0;
		$('append_parent').appendChild(div);
	}
	zoomobj['srcinfo'] = fetchOffset(obj);
	zoomobj['srcobj'] = obj;
	zoomobj['zimg'] = zimg;
	zoomobj['id'] = 'zoom_' + Math.random();
	$('zoomimglayer').setAttribute('pid', obj.getAttribute('pid'));
	$('zoomimglayer').style.display = '';
	$('zoomimglayer').style.left = zoomobj['srcinfo']['left'] + 'px';
	$('zoomimglayer').style.top = zoomobj['srcinfo']['top'] + 'px';
	$('zoomimglayer').style.width = zoomobj['srcobj'].width + 'px';
	$('zoomimglayer').style.height = zoomobj['srcobj'].height + 'px';
	$('zoomimglayer').style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=40)';
	$('zoomimglayer').style.opacity = 0.4;
	$('zoomimglayer').style.zIndex = '999';
	$('zoomimglayer').innerHTML = '<table width="100%" height="100%" cellspacing="0" cellpadding="0"><tr><td align="center" valign="middle"><img src="/images/website/loading.gif"></td></tr></table><div style="position:absolute;top:-100000px;display:none"><img id="' + zoomobj['id'] + '" src="' + zoomobj['zimg'] + '"></div>';
	setTimeout('zoomimgresize($(\'' + zoomobj['id'] + '\'))', 100);
	if(is_ie) {
		doane(event);
	}
}
function zoomST(c) {
	if($('zoomimglayer').style.display == '') {
		$('zoomimglayer').style.left = (parseInt($('zoomimglayer').style.left) + zoomobj['x']) + 'px';
		$('zoomimglayer').style.top = (parseInt($('zoomimglayer').style.top) + zoomobj['y']) + 'px';
		$('zoomimglayer').style.width = (parseInt($('zoomimglayer').style.width) + zoomobj['w']) + 'px';
		$('zoomimglayer').style.height = (parseInt($('zoomimglayer').style.height) + zoomobj['h']) + 'px';
		c++;
		if(c <= 5) {
			setTimeout('zoomST(' + c + ')', 1);
		} else {
			var zoomunpic='';
		//	if(zoomuppic!='') {zoomunpic='<img id="123" style="cursor: hand" onclick="zoomSTddf(this,\'/images/bbs/bbs_25.gif\')" width=100 title="'+zoomunpic+'" src="images/ad_h.jpg">';}
			$('zoomimglayer').style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=100,style=0)';
			$('zoomimglayer').style.opacity = 1;
			zoomadjust = 1;
			$('zoomimglayer').style.filter = '';
			$('zoomimglayer_bg').style.display = '';
			$('zoomimglayer').innerHTML = '<div class="zoominner"><p><span class="rightf"><a href="' + zoomobj['zimg'] + '" class="imglink" target="_blank" title="在新窗口打开">在新窗口打开</a><a href="javascipt:;" onclick="zoomimgadjust(event, 1)" class="imgadjust" title="实际大小">实际大小</a><a href="javascript:;" onclick="zoomclose()" class="imgclose" title="关闭">关闭</a></span>鼠标滚轮缩放图片</p><div id="zoomimgbox"><img id="zoomimg" style="cursor: move;" src="' + zoomobj['zimg'] + '" width="' + parseInt($('zoomimglayer').style.width) + '" height="' + parseInt($('zoomimglayer').style.height) + '"></div></div>';
			$('zoomimglayer').style.overflow = 'visible';
			$('zoomimglayer').style.width = (parseInt($('zoomimg').width < 300 ? 300 : parseInt($('zoomimg').width)) + 20) + 'px';
			$('zoomimglayer').style.height = (parseInt($('zoomimg').height) + 20) + 'px';
			if(is_ie){
				$('zoomimglayer').onmousewheel = zoomimgadjust;
			} else {
				$('zoomimglayer').addEventListener("DOMMouseScroll", zoomimgadjust, false);
			}
			$('zoomimgbox').onmousedown = function(event) {try{zoomdrag(event, 1);}catch(e){}};
			$('zoomimgbox').onmousemove = function(event) {try{zoomdrag(event, 2);}catch(e){}};
			$('zoomimgbox').onmouseup = function(event) {try{zoomdrag(event, 3);}catch(e){}};
		}
	}
}

function zoomimgresize(obj) {
	if(!obj.complete) {
		setTimeout('zoomimgresize($(\'' + obj.id + '\'))', 100);
		return;
	}
	obj.parentNode.style.display = '';
	zoomobj['zimginfo'] = [obj.width, obj.height];
	var r = obj.width / obj.height;
	var w = document.body.clientWidth * 0.95;
	w = obj.width > w ? w : obj.width;
	var h = w / r;
	var clientHeight = document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body.clientHeight;
	var scrollTop = document.body.scrollTop ? document.body.scrollTop : document.documentElement.scrollTop;
	if(h > clientHeight) {
		h = clientHeight;
		w = h * r;
	}
	var l = (document.body.clientWidth - w) / 2;
	var t = h < clientHeight ? (clientHeight - h) / 2 : 0;
	t += + scrollTop;
	zoomobj['x'] = (l - zoomobj['srcinfo']['left']) / 5;
	zoomobj['y'] = (t - zoomobj['srcinfo']['top']) / 5;
	zoomobj['w'] = (w - zoomobj['srcobj'].width) / 5;
	zoomobj['h'] = (h - zoomobj['srcobj'].height) / 5;
	$('zoomimglayer').style.filter = '';
	$('zoomimglayer').innerHTML = '';
	setTimeout('zoomST(1)', 5);
}

function zoomimgadjust(e, a) {
	if(!a) {
		if(!e) e = window.event;
		if(e.altKey || e.shiftKey || e.ctrlKey) return;
		var l = parseInt($('zoomimglayer').style.left);
		var t = parseInt($('zoomimglayer').style.top);
		if(e.wheelDelta <= 0 || e.detail > 0) {
			if($('zoomimg').width <= 200 || $('zoomimg').height <= 200) {
				doane(e);return;
			}
			$('zoomimg').width -= zoomobj['zimginfo'][0] / 10;
			$('zoomimg').height -= zoomobj['zimginfo'][1] / 10;
			l += zoomobj['zimginfo'][0] / 20;
			t += zoomobj['zimginfo'][1] / 20;
		} else {
			if($('zoomimg').width >= zoomobj['zimginfo'][0]) {
				zoomimgadjust(e, 1);return;
			}
			$('zoomimg').width += zoomobj['zimginfo'][0] / 10;
			$('zoomimg').height += zoomobj['zimginfo'][1] / 10;
			l -= zoomobj['zimginfo'][0] / 20;
			t -= zoomobj['zimginfo'][1] / 20;
		}
	} else {
		var clientHeight = document.documentElement.clientHeight ? document.documentElement.clientHeight : document.body.clientHeight;
		var scrollTop = document.body.scrollTop ? document.body.scrollTop : document.documentElement.scrollTop;
		$('zoomimg').width = zoomobj['zimginfo'][0];$('zoomimg').height = zoomobj['zimginfo'][1];
		var l = (document.body.clientWidth - $('zoomimg').clientWidth) / 2;l = l > 0 ? l : 0;
		var t = (clientHeight - $('zoomimg').clientHeight) / 2 + scrollTop;t = t > 0 ? t : 0;
	}
	$('zoomimglayer').style.left = l + 'px';
	$('zoomimglayer').style.top = t + 'px';
	$('zoomimglayer_bg').style.height = t + $('zoomimglayer').clientHeight > $('zoomimglayer_bg').clientHeight ? (t + $('zoomimglayer').clientHeight) + 'px' : $('zoomimglayer_bg').style.height;
	$('zoomimglayer').style.width = (parseInt($('zoomimg').width < 300 ? 300 : parseInt($('zoomimg').width)) + 20) + 'px';
	$('zoomimglayer').style.height = (parseInt($('zoomimg').height) + 20) + 'px';
	doane(e);
}

function zoomclose() {
	$('zoomimglayer').innerHTML = '';
	$('zoomimglayer').style.display = 'none';
	$('zoomimglayer_bg').style.display = 'none';
}