function show_remaining(formName, elemName, remName, maxLength) {
		if (elemName == null) { elemName = 'content' }
		if (remName == null) { remName = 'remaining' }
		if (maxLength == null){ maxLength = 160 }
       	var theForm = document.forms[formName];
		var content = theForm.elements[elemName];
		var remaining = theForm.elements[remName];
																
		if(content.value.length > maxLength){
			content.value = content.value.substring(0,maxLength)
		}
		remaining.value = maxLength - content.value.length;
}