$(document).ready(function(){
	var form = $('.kat_pretraga_form');
	var domain = form.attr('domain');
	var categories = $('select[name=\'category[]\']',form);
	var companies_select = $('select[name=\'company[]\']',form);
	$('option',companies_select).click(function(){
		
		var selected_companies = $('option:selected',companies_select);
		var str = 'size='+selected_companies.size();
		var counter = 1;
		selected_companies.each(function () {
        	str += '&company'+counter+++'='+$(this).attr('value');
      	});
		$.ajax({
			type: 'POST',
			url: domain+'/obrada/get_company_category',
			data: str,
			success: function(msg){
				var options_data = eval('('+msg+')');
									
				$('option',categories).remove();							
				var options = categories.attr('options');
				
				$.each(options_data, function(val, text) {
					options[options.length] = new Option(val,text);
				});
			}
		});
	});
});