//example of textarea needs:  maxlength="5000" onkeyup="return chkMaxLength(this)"
function chkMaxLength(textarea_obj)
{
	var max_length = textarea_obj.getAttribute? parseInt(textarea_obj.getAttribute("maxlength")) : ""
	
	if(textarea_obj.getAttribute && textarea_obj.value.length > max_length)
	{
		textarea_obj.value = textarea_obj.value.substring(0, max_length)
	}
}