window.onload= updateShips; 

function updateShips() {
   if(undefined == $('cline')) {
      cline = 0;
   } else { 
      var cline = ($('cline').value);
   }
   
	new Ajax.Updater('ships', '/ajax', {
	 method: 'get',
	 parameters: "f=ships&id=" + cline + "&sel=0" 
	});
}