function chkFileExtName(obj)
{
	if(obj.value!="" && obj.value.search(/\.((jpg)|(gif)|(png))$/i)==-1)
		return false;
	else
		return true;
}

function MainPicShow(pic,picurl,link,linkurl)
{
	var oPic=document.getElementById(pic);
	if(oPic!=null)
	{
		oPic.src=picurl;
	}
	var oLink=document.getElementById(link);
	if(oLink!=null)
	{
		oLink.href=linkurl;
	}
}

function SelAll(objs,val)
{
	try
	{
		if(typeof(objs.length)=="undefined")
			objs.checked=(typeof(val)=="boolean"?val:!objs.checked);
		else
		{
			for(var i=0;i<objs.length;++i)
				objs[i].checked=(typeof(val)=="boolean"?val:!objs[i].checked);
		}
	}
	catch(e){window.status="Error:"+e.number;}
}