//图片缩放
function DownImage(ImgD,MaxWidth,MaxHeight,alignX,alignY)
{
	alignX=alignX||1;
	alignY=alignY||1;
    var image=new Image();
    image.src=ImgD.src;
    if(image.width>0 && image.height>0)
	{
		var rate = (MaxWidth/image.width < MaxHeight/image.height)?MaxWidth/image.width:MaxHeight/image.height;
		var wid=0;
		var hid=0;
		if(rate <= 1)
		{
			wid=ImgD.width=image.width*rate;
			hid=ImgD.height=image.height*rate;
		}
		else
		{
			wid=ImgD.width=image.width;
			hid=ImgD.height=image.height;
		}
		if(alignX==1)
		{
			var ii=(MaxWidth-wid)/2;
			ImgD.style.marginLeft=ImgD.style.marginRight=ii+"px";
		}
		if(alignY==1)
		{
			var ii=(MaxHeight-hid)/2;
			ImgD.style.marginTop=ImgD.style.marginBottom=ii+"px";
		}
    }
}



//添加到收藏夹代码
function shoucang(str,title)
{
    window.external.addFavorite(str,title);
}

function copyToClipboard(txt) { 
    if(window.clipboardData) 
    { 
       window.clipboardData.clearData(); 
       window.clipboardData.setData("Text", txt); 
    } 
    else if(navigator.userAgent.indexOf("Opera") != -1) 
    { 
        window.location = txt; 
    } 
    else if(window.netscape) 
    { 
        try 
        { 
            netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 
        }
        catch (e) 
        { 
            alert("您的firefox安全限制限制您进行剪贴板操作，请打开'about:config'将signed.applets.codebase_principal_support'设置为true'之后重试"); 
            return false; 
        } 
        var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard); 
        if (!clip) return; 
        var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable); 
        if (!trans) return; 
        trans.addDataFlavor('text/unicode'); 
        var str = new Object(); 
        var len = new Object(); 
        var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString); 
        var copytext = txt; 
        str.data = copytext; 
        trans.setTransferData("text/unicode",str,copytext.length*2); 
        var clipid = Components.interfaces.nsIClipboard; 
        if (!clip) return false; 
        clip.setData(trans,null,clipid.kGlobalClipboard); 
    } 
    alert("已复制到剪贴板");
}