var alink = {
             
        init: function() {
			$$('.alink').each( function(a) { a.observe('click', alink.execute);	}	);			
		},
        
        execute: function(e) {
			var elem = $(Event.findElement(e, "a"));
			
			alink.up = new Ajax.Updater('col1', elem.readAttribute('href'), {
					encoding :'UTF-8',
					method:'post',
					parameters : { id :'col1'}
			});
		
			Event.stop(e);
		}

       
}

Event.observe(window, 'load', alink.init);