html.js

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/*
	[Discuz!] (C)2001-2007 Comsenz Inc.
	This is NOT a freeware, use is subject to license terms

	$RCSfile: viewthread.js,v $
	$Revision: 1.45 $
	$Date: 2007/06/15 21:48:18 $
*/
//var IMGDIR = 'images';var SMDIR = 'images/smilies';var attackevasive = '0';


var lang = new Array();
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);

function $(id) {
	return document.getElementById(id);
}

Array.prototype.push = function(value) {
	this[this.length] = value;
	return this.length;
}


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;

function zoom(obj, zimg) {
	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.width = '100%';
		div.style.height = document.body.scrollHeight + 'px';
		div.style.backgroundColor = '#333';
		div.style.display = 'none';
		div.style.zIndex = '998';
		div.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=60,finishOpacity=100,style=0)';
		div.style.opacity = 0.6;
		$('append_parent').appendChild(div);
		div = document.createElement('div');div.id = 'zoomimglayer';
		div.style.position = 'absolute';
		div.className = 't_attach';
		div.style.padding = 0;
		div.onclick = zoomimgclick;
		$('append_parent').appendChild(div);
	}
	zoomobj['srcinfo'] = fetchOffset(obj);
	zoomobj['srcobj'] = obj;
	zoomobj['zimg'] = zimg;
	$('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,finishOpacity=100,style=0)';
	$('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="' + IMGDIR + '/loading.gif"></td></tr></table><div style="position:absolute;top:-100000px;visibility:hidden"><img onload="zoomimgresize(this)" src="' + zoomobj['zimg'] + '"></div>';
}

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';
		var opacity = c * 20;
		$('zoomimglayer').style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=' + opacity + ',finishOpacity=100,style=0)';
		$('zoomimglayer').style.opacity = opacity / 100;
		c++;
		if(c <= 5) {
			setTimeout('zoomST(' + c + ')', 5);
		} else {
			zoomadjust = 1;
			$('zoomimglayer').style.filter = '';
			$('zoomimglayer_bg').style.display = '';
			$('zoomimglayer').innerHTML = '<div align="left" style="padding: 5px"><a href="' + zoomobj['zimg'] + '" target="_blank"><img src="' + IMGDIR + '/newwindow.gif" border="0" style="vertical-align: middle" />在新窗口打开</a> <a href="###" onclick="zoomimgadjust(event, 1)"><img src="' + IMGDIR + '/resize.gif" border="0" style="vertical-align: middle" />实际大小</a> <em>Alt+鼠标滚轮缩放图片，点击关闭</em></div><img id="zoomimg" src="' + zoomobj['zimg'] + '" width="' + $('zoomimglayer').style.width + '" height="' + $('zoomimglayer').style.height + '">';
			$('zoomimglayer').style.overflow = 'visible';
			$('zoomimglayer').style.width = $('zoomimglayer').style.height = 'auto';
			if(is_ie){
				$('zoomimglayer').onmousewheel = zoomimgadjust;
			} else {
				$('zoomimglayer').addEventListener("DOMMouseScroll", zoomimgadjust, false);
			}
		}
	}
}

function zoomimgresize(obj) {
	var r = obj.width / obj.height;
	var w = document.body.clientWidth * 0.8;
	w = obj.width > w ? w : obj.width;
	var h = w / r;
	if(h > document.body.clientHeight * 0.9) {
		h = document.body.clientHeight * 0.9;
		w = h * r;
	}
	var l = (document.body.clientWidth - w) / 2;
	var t = h < document.body.clientHeight ? (document.body.clientHeight - h) / 2 : 0;
	t += + document.body.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) {
			if(e.wheelDelta <= 0 || e.detail > 0) {
				zoomadjust = 1.1;
			} else {
				if($('zoomimg').width < $('zoomimglayer').clientWidth) {
					doane(e);return;
				}
				zoomadjust = 0.9;
			}
			$('zoomimg').style.width = $('zoomimg').style.height = '';
			$('zoomimg').width *= zoomadjust;$('zoomimg').height *= zoomadjust;
			var l = (document.body.clientWidth - $('zoomimg').clientWidth) / 2;l = l > 0 ? l : 0;
			var t = (document.body.clientHeight - $('zoomimg').clientHeight) / 2 + document.body.scrollTop;t = t > 0 ? t : 0;
			$('zoomimglayer').style.left = l + 'px';
			$('zoomimglayer').style.top = t + 'px';
			doane(e);
		}
	} else {
		$('zoomimg').style.width = $('zoomimg').style.height = 'auto';
		var l = (document.body.clientWidth - $('zoomimg').clientWidth) / 2;l = l > 0 ? l : 0;
		var t = (document.body.clientHeight - $('zoomimg').clientHeight) / 2 + document.body.scrollTop;t = t > 0 ? t : 0;
		$('zoomimglayer').style.left = l + 'px';
		$('zoomimglayer').style.top = t + 'px';
		doane(e);
	}
}

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

/*按比例生成缩略图*/
/*
	[Discuz!] (C)2001-2007 Comsenz Inc.
	This is NOT a freeware, use is subject to license terms

	$RCSfile: viewthread.js,v $
	$Revision: 1.78 $
	$Date: 2007/08/01 05:55:44 $
*/

var msgwidth = 0;
function attachimg(obj, action) {
	if(action == 'load') {
		if(!msgwidth) {
			var re = /postcontent|message/i;
			var testobj = obj;
			while((testobj = testobj.parentNode) != null) {
				var matches = re.exec(testobj.className);
				if(matches != null) {
					msgwidth = testobj.clientWidth - 20;
					break;
				}
			}
			if(!msgwidth) {
				msgwidth = 1000;
			}
		}
		if(obj.width > msgwidth) {
			obj.resized = true;
			obj.width = msgwidth;
			obj.style.cursor = 'pointer';
		} else {
			obj.onclick = null;
		}
		obj.onload = null;
	} else if(action == 'mouseover') {
		if(obj.resized) {
			obj.style.cursor = 'pointer';
		}
	}
}

function attachimginfo(obj, infoobj, show, event) {
	objinfo = fetchOffset(obj);
	if(show) {
		$(infoobj).style.left = objinfo['left'] + 'px';
		$(infoobj).style.top = obj.offsetHeight < 40 ? (objinfo['top'] + obj.offsetHeight) + 'px' : objinfo['top'] + 'px';
		$(infoobj).style.display = '';
	} else {
		if(is_ie) {
			$(infoobj).style.display = 'none';
			return;
		} else {
			var mousex = document.body.scrollLeft + event.clientX;
			var mousey = document.documentElement.scrollTop + event.clientY;
			if(mousex < objinfo['left'] || mousex > objinfo['left'] + objinfo['width'] || mousey < objinfo['top'] || mousey > objinfo['top'] + objinfo['height']) {
				$(infoobj).style.display = 'none';
			}
		}
	}
}