DiscuzX/upload/source/plugin/xf_storage/template/ftnupload.htm

<!--{block return}-->
<div class="p_opt" unselectable="on" id="{$editorid}_ftnupload" style="display: none;">
	<div id="iframeurl" style="height:0px;"></div>

	<div class="hm bbda" id="{$editorid}_ftnattach">
		<iframe id="ftniframe" name="ftniframe" frameborder="0" scrolling="no" src="about:blank" width="510px" height="310px"></iframe>
		<div class="ftn_buttondiv">
			<button id="ftn_over" class="pn" value="true" name="editsubmit" onclick="loadiframe(null,'ftniframe',0,1);updateAttachList();this.disabled=true;this.className='pn'" disabled>
				<span>{lang xf_storage:sava_attachlist}</span>
			</button>
		</div>
	</div>

	<div class="notice uploadinfo">{lang xf_storage:filesize_limit}
	</div>
</div>

<script lang="text/javascript" reload="1">

	_attachEvent($('e_ftn'),'click',function(e){loadiframe(null,'ftniframe');});
	_attachEvent($('e_attach'),'click',function(e){
		if (ATTACHNUM['attachunused'] == 0 && ATTACHNUM['attachused'] == 0) {
			loadiframe(null,'ftniframe');switchAttachbutton('ftnupload');
		}
	});
	_attachEvent($('e_btn_ftnupload').getElementsByTagName('a')[0], 'click',
					function(e){hideConfirm();});
	_attachEvent($('e_btn_attachlist').getElementsByTagName('a')[0], 'click',
					function(e){showConfirm();});
	_attachEvent($('e_btn_upload').getElementsByTagName('a')[0], 'click',
					function(e){showConfirm();});

	if(BROWSER.firefox && window.HTMLElement) {   //为 firefox 增加 innerText 方法
		HTMLElement.prototype.__defineGetter__("innerText", function(){
			var anyString = "";
			var childS = this.childNodes;
			for(var i=0; i<childS.length; i++) {
				if(childS[i].nodeType==1)
				anyString += childS[i].innerText;
				else if(childS[i].nodeType==3)
				anyString += childS[i].nodeValue;
			}
			return anyString;
		});
		HTMLElement.prototype.__defineSetter__("innerText", function(sText){
			this.textContent=sText;
		});
	}

	function showConfirm() {
		$('attach_confirms').style.display='';
	}

	function hideConfirm() {
		$('attach_confirms').style.display='none';
	}

	function loadiframe(url,iframeid,time,force){
		var swfupload = 1;
		var formhash = '{FORMHASH}';
		if(BROWSER.ie){
			var loading = "<div style='color:#777;font-size:12px;margin:-15px 0 0 -10px;padding:0px;'>{lang xf_storage:wait_for_url}</div>";
			} else {
			var loading = "<div style='color:#777;font-size:12px;margin:-8px 0 0 -7px;padding:0px;'>{lang xf_storage:wait_for_url}</div>";
		}


		var iframe = $(iframeid);

		if(url == null){
			ajaxget('plugin.php?id=xf_storage:ftn_upload&formhash='+formhash,'iframeurl','',null,null,function(){
				url = $('iframeurl_ajax').innerText;
				time = time ? time : 200;
				force = force ? force : 0;
				if(iframe.src == "about:blank") {
					iframe.contentWindow.document.write(loading);
					//return false;
					setTimeout(function()
					{
						iframe.src = "about:blank";

						iframe.src = url;
					},time);
					} else if(force == 1) {
					setTimeout(function()
					{
						iframe.src = "about:blank";

						iframe.src = url;
					},time);
				}
			});
		} else {
			time = time ? time : 200;
			force = force ? force : 0;
			if(iframe.src == "about:blank") {

				setTimeout(function()
				{
					iframe.src = "about:blank";

					iframe.src = url;
				},time);
			} else if(force == 1) {
				setTimeout(function()
				{
					iframe.src = "about:blank";

					iframe.src = url;
				},time);
			}
		}
		// 页面超时监控,仅IE有效
		// if (BROWSER.ie) {
		//	var linster = setTimeout(function() {
		//		if(iframe.readyState != 'complete' && swfupload == 1){
		//			if(confirm('{lang xf_storage:timeout_tips}')){
		//				switchAttachbutton('swfupload');
		//			}
		//			} else if(iframe.readyState != 'complete' && swfupload == 0) {
		//			if(confirm('{lang xf_storage:timeout_tips}')){
		//				switchAttachbutton('upload');
		//			}
		//		}
		//	},60000);
		// }
	}
</script>
<!--{/block}-->