window.addEvent('domready', function(){
	// First Example
	var el = $('suwak'),
		fla= $('flaszka');
	
	// Create the new slider instance
	new Slider(el, el.getElement('.knob'), {
		steps: 10,	
		range: [500,890],
		onChange: function(value){
			var ratio = 600 / 800;
			$('flaszka').width=value;
			$('flaszka').height=value * ratio;
		}
	}).set(890);
});