function getpos(element)
{
        if ( arguments.length != 1 || element == null )
        {
               return null;
        }
        var elmt = element;
        var offsetTop = elmt.offsetTop;
        var offsetLeft = elmt.offsetLeft;
        var offsetWidth = elmt.offsetWidth;
        var offsetHeight = elmt.offsetHeight;
        while( elmt = elmt.offsetParent )
        {
                // add this judge
                if ( elmt.style.position == 'absolute'
//              || elmt.style.position == 'relative'
                || ( elmt.style.overflow != 'visible' && elmt.style.overflow != '' ) )
                {
                        break;
                }
                offsetTop += elmt.offsetTop;
                offsetLeft += elmt.offsetLeft;
        }
        return {top:offsetTop, left:offsetLeft, right:offsetWidth+offsetLeft, bottom:offsetHeight+offsetTop };
}

//DataLength
function b_strlen(fData)
{
	var intLength=0;
	for (var i=0;i<fData.length;i++)
	{
		if ((fData.charCodeAt(i) < 0) || (fData.charCodeAt(i) > 255))
			intLength=intLength+2;
		else
			intLength=intLength+1;   
	}
	return intLength;
}

function IsIE()
{
	return document.all ? true : false;
}

function copy_clip(text2copy) 
{
	if (window.clipboardData) 
	{
		window.clipboardData.setData("Text",text2copy);
	} 
	else 
	{
		var flashcopier = 'flashcopier';
		if(!document.getElementById(flashcopier)) 
		{
			var divholder = document.createElement('div');
			divholder.id = flashcopier;
			document.body.appendChild(divholder);
		}
		document.getElementById(flashcopier).innerHTML = '';
		var divinfo = '<embed src="/i/_clipboard.swf" FlashVars="clipboard='+escape(text2copy)+'" width="0" height="0" type="application/x-shockwave-flash"></embed>';//这里是关键
		document.getElementById(flashcopier).innerHTML = divinfo;
	}
	return true;
}

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 false;
		var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
		if (!trans)
			return false;
		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);
	}
	return true;
}



function _commentImageResize(thisobj , limit)
{
        if(thisobj.width > limit)
        {
                thisobj.height = parseInt(limit*thisobj.height/thisobj.width);
                thisobj.width = limit;
        }

}

String.prototype.trim = function()
{
    return this.replace(/(^[\s]*)|([\s]*$)/g, "");
}
String.prototype.lTrim = function()
{
    return this.replace(/(^[\s]*)/g, "");
}
String.prototype.rTrim = function()
{
    return this.replace(/([\s]*$)/g, "");
}

function getDays(year , month)
{
	var dayarr = new Array(31,28,31,30,31,30,31,31,30,31,30,31);

	if(month == 2)
	{
		if((year%4 == 0 && year%100 != 0) || year%400 == 0 || year < 1900)
			return 29;
		else
			return dayarr[month-1];
	}
	else
	{
		return dayarr[month-1];
	}
}

function extractNodes(pNode)
{
	if(pNode.nodeType == 3)
	{
		return null;
	}
	var node,nodes = new Array();
        for(var i=0 ; node= pNode.childNodes[i] ; i++)
        {
		if(node.nodeType == 1)
		{
			nodes.push(node);
		}
        }
        return nodes;
}