$(document).ready(function(){ 
						   
	$('#type').change(function(){
		//alert($('#type').selectedValues());
		var selvalue = $('#type').selectedValues();		
		if(selvalue == '')
		{
			$("#brand").removeOption(/.*/); $("#model").removeOption(/.*/);
			$('#brand').attr("disabled", true); $('#model').attr("disabled", true);			
			
		}
		else
		{
			$('#brand').attr("disabled", false);
			$.ajax({
   			type: "POST",
   			url: "ajax.php",
   			data: "name=type&val="+selvalue,
   			success: function(msg){
    		 //alert( "Data Saved: " + msg );
			 $('#sel2').html('');
			 $('#sel2').html(msg);
   			}
 			});
		}
	});	
	
});

function jax(){
	var selvalue2 = $('#brand').selectedValues();
	if(selvalue2 == '')
	{
		$("#model").removeOption(/.*/); $('#model').attr("disabled", true);	
		
	}
	else
	{
		$('#model').attr("disabled", false);		
			$.ajax({
   			type: "POST",
   			url: "ajax.php",
   			data: "name=brand&val="+selvalue2,
   			success: function(msg){
    		 //alert( "Data Saved: " + msg );
			 $('#sel3').html('');
			 $('#sel3').html(msg);
   			}
 			});
	}	
}