// JavaScript Document
//-->
		function numbersonly(myfield, e, dec)
		{
		var key;
		var keychar;
		
		if (window.event)
		key = window.event.keyCode;
		else if (e)
		key = e.which;
		else
		return true;
		keychar = String.fromCharCode(key);
		
		if ((key==null) || (key==0) || (key==8) || 
		(key==9) || (key==13) || (key==27) )
		return true;
		
		else if ((("0123456789/ ").indexOf(keychar) > -1))
		return true;
		
		else if (dec && (keychar == "."))
		{
		mod_datos.focus();
		return false;
		}
		else
		return false;
		}		
		//-->