function $(id) {
	itm = null;
	if (document.getElementById) {
		itm = document.getElementById(id);
	} else if (document.all)	{
		itm = document.all[id];
	} else if (document.layers) {
		itm = document.layers[id];
	}
	return itm;
}
function ShowOrHide(d1) {
	  if (d1 != '') DoDiv(d1);
}

function DoDiv(id) {
	var item = null;
	item = $(id);
	if (!item) {  }
  else if (item.style) {
	if (item.style.display == "none"){ item.style.display = ""; }
	else {item.style.display = "none"; }
  }else{ item.visibility = "show"; }
}
//
function addquote(obj,strAuthor){
	var text = $(obj).innerHTML;
	text = text.replace(/alt\=(\"|)([^\"\s]*)(\"|)/g,"> $2 <");
	text = text.replace(/\<[^\<\>]+\>/g,"\n");
	text = text.replace(/ +/g," ");
	text = text.replace(/\n+/g,"\n");
	text = text.replace(/^\n*/gm,"");
	text = text.replace(/^\s*/gm,"");
	text = text.replace(/\n*$/gm,"");
	text = text.replace(/\s*$/gm,"");
	text = text.replace(/&lt;/g,"<");
	text = text.replace(/&gt;/g,">");
	text = text.replace(/&nbsp;&nbsp;/g,"  ");
	text = text.replace(/&amp;/g,"&");
	$("message").value += "[quote="+strAuthor+"]"+text+"[/quote]";
	$("message").focus();
}

function checkform() {

	if ($('username')) {
		if ($('username').value == "") {
			alert("请输入您的名字.");
			return false;
		}
	}
	if ($('message').value == "")	{
		alert("请输入内容.");
		return false;
	}
	if (((postminchars != 0 && $('message').value.length < postminchars) || (postmaxchars != 0 && $('message').value.length > postmaxchars))) {
		alert("您的评论内容长度不符合要求。\n\n当前长度: "+$('message').value.length+" 字节\n系统限制: "+postminchars+" 到 "+postmaxchars+" 字节");
		return false;
	}			
	$('submit').disabled = true;
	return true;
}

//快捷键
function ctlent(event) {
	if((event.ctrlKey && event.keyCode == 13) || (event.altKey && event.keyCode == 83)) {
		$("submit").click();
	}
}
//Media Link
function playmedia(strID,strType,strURL,intWidth,intHeight) {
	var objDiv=document.getElementById(strID);
	if (!objDiv) return false;
	if (objDiv.style.display!='none') {
		objDiv.innerHTML='';
		objDiv.style.display='none';
	} else {
		objDiv.innerHTML=makemedia(strType,strURL,intWidth,intHeight);
		objDiv.style.display='block';
	}
}

//Media Build
function makemedia (strType,strURL,intWidth,intHeight) {
	var strHtml;
	switch(strType) {
		case 'wmp':
			strHtml="<object width='"+intWidth+"' height='"+intHeight+"' classid='CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6'><param name='url' value='"+strURL+"'/><embed width='"+intWidth+"' height='"+intHeight+"' type='application/x-mplayer2' src='"+strURL+"'></embed></object>";
			break;
		case "wmv":
			strHtml='<div style="height:6px;overflow:hidden"></div><object classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95" codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=6,0,02,902" type="application/x-oleobject" standby="Loading..." width="'+intWidth+'" height="'+intHeight+'"><param name="FileName" VALUE="'+strURL+'" /><param name="ShowStatusBar" value="-1" /><param name="AutoStart" value="true" /><embed type="application/x-mplayer2" pluginspage="http://www.microsoft.com/Windows/MediaPlayer/" src="'+strURL+'" autostart="true" width="'+intWidth+'" height="'+intHeight+'" /></object>';
			break;
		case 'swf':
			strHtml="<object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' width='"+intWidth+"' height='"+intHeight+"'><param name='movie' value='"+strURL+"'/><param name='quality' value='high' /><embed src='"+strURL+"' quality='high' type='application/x-shockwave-flash' width='"+intWidth+"' height='"+intHeight+"'></embed></object>";
			break;
		case 'rm':
			strHtml="<object classid='clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA' height='"+intHeight+"' width='"+intWidth+"' viewastext><param name='_ExtentX' value='12726'><param name='_ExtentY' value='8520'><param name='AUTOSTART' value='0'><param name='SHUFFLE' value='0'><param name='PREFETCH' value='true'><param name='NOLABELS' value='0'><param name='CONTROLS' value='ImageWindow'><param name='CONSOLE' value='_master'><param name='LOOP' value='0'><param name='NUMLOOP' value='0'><param name='CENTER' value='0'><param name='MAINTAINASPECT' value='"+strURL+"'><param name='BACKGROUNDCOLOR' value='#000000'></object><br><object classid='clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA' height='32' id='Player' width='"+intWidth+"' VIEWASTEXT><param name='_ExtentX' value='18256'><param name='_ExtentY' value='794'><param name='AUTOSTART' value='-1'><param name='SHUFFLE' value='0'><param name='PREFETCH' value='0'><param name='NOLABELS' value='0'><param name='CONTROLS' value='controlpanel'><param name='CONSOLE' value='_master'><param name='LOOP' value='0'><param name='NUMLOOP' value='0'><param name='CENTER' value='0'><param name='MAINTAINASPECT' value='0'><param name='BACKGROUNDCOLOR' value='#000000'><param name='SRC' value='"+strURL+"'></object>";
			break;
		case 'mp3':
			strHtml="<object width='400' height='65' classid='CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6'><param name='url' value='"+strURL+"'/><embed width='400' height='65' type='application/x-mplayer2' src='"+strURL+"'></embed></object>";
			break;
		case 'wma':
			strHtml="<object width='400' height='65' classid='CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6'><param name='url' value='"+strURL+"'/><embed width='400' height='65' type='application/x-mplayer2' src='"+strURL+"'></embed></object>";
			break;
		case 'media':
			strHtml="<object width='"+intWidth+"' height='"+intHeight+"' classid='CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6'><param name='url' value='"+strURL+"'/><embed width='"+intWidth+"' height='"+intHeight+"' type='application/x-mplayer2' src='"+strURL+"'></embed></object>";
			break;
		case "qt":
				strHtml="<embed src='"+strURL+"' autoplay='true' Loop='false' controller='true' playeveryframe='false' cache='false' scale='TOFIT' bgcolor='#000000' kioskmode='false' targetcache='false' pluginspage='http://www.apple.com/quicktime/'>";
				break;
	}
	return strHtml;
}

function bbimg(o){/*直接鼠标控制*/
	var zoom=parseInt(o.style.zoom, 10)||100;
	zoom+=event.wheelDelta/12;
	if(zoom>0){
		o.style.zoom=zoom+'%';
		return false;
	}
}
/* ctrl+鼠标
function bbimg(o) {
	if(event.ctrlKey) {
			var zoom = parseInt(o.style.zoom, 10) || 100;
			zoom -= event.wheelDelta / 12;
			if(zoom > 0) {
					o.style.zoom = zoom + '%';
			}
			return false;
	} else {
			return true;
	}
}*/
function showtab(btnid,tabid,tabnumber)
{
	for (i = 1;i<=tabnumber;i++)
	{
		$(tabid+"_btn"+i).className = "tabpane";
		$(tabid+"_sub"+i).style.display = "none";
	}
	$(tabid+"_btn"+btnid).className = "select";
	$(tabid+"_sub"+btnid).style.display = "";
}
//创建AJAX 
function initxmlhttp() 
{ 
	var xmlhttp 
	try { 
		xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); 
	} catch (e) { 
		try { 
			xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); 
		} catch (E) { 
			xmlhttp=false; 
		} 
	} 
	if (!xmlhttp && typeof XMLHttpRequest!='undefined') { 
		try { 
			xmlhttp = new XMLHttpRequest(); 
		} catch (e) { 
			xmlhttp=false; 
		} 
	} 
	if (!xmlhttp && window.createRequest) { 
		try { 
			xmlhttp = window.createRequest(); 
		} catch (e) { 
			xmlhttp=false; 
		} 
	} 
	return xmlhttp; 
}