function error(msg)
{
	document.wm_form.errMsg.value=msg;
	document.wm_form.submit();
}
function wmselection(type)
{
	if(type=="upload")
	{
		document.getElementById('systemtr').style.display="none";
		document.getElementById('uploadtr').style.display="";
		for(i=0; i<30; i++)
			document.post_form.systemwatermarkImage[i].disabled=true;
		document.post_form.watermarkImage.disabled=false;
	}
	else if(type=="system")
	{
		document.getElementById('uploadtr').style.display="none";
		document.getElementById('systemtr').style.display="";
		for(i=0; i<30; i++)
			document.post_form.systemwatermarkImage[i].disabled=false;
		document.post_form.watermarkImage.disabled=true;
	}
}