$(document).ready(function(){
	var id=String(window.location).split('/');
	var id=id[id.length-1];
	if(id==parseFloat(id)){
		$('#radio_'+id).attr('checked','checked');
		document.getElementsByName('step1[car]')[0].value=id;
		//$('input[name=step1[car]]').val(id);
	}
	
});