$(document).ready(function()
{

    $('#shipping_method').bind('change',function(){
        this.form.submit();
    });

    $('#country_id').bind('change',function(){
        if(this.value == 'US' || this.value == 'AS' || this.value == 'VI' || this.value == 'PR'){
            $('#el_state_id').show();
        }else{
        	$('#el_state_id').hide();
            
        }
    });

    $('#zip').bind('focus',function(){
        if(this.value == 'Enter Zip Code') this.value = '';
    })

    if(document.getElementById('country_id').value !='US'){
        $('#el_state_id').hide();
    }

});