var ShippingCalculator=Class.create({initialize:function(){this.form=$('ShippingCalculator');this.overlay=new Element('div').setStyle({'position':'absolute','top':0,'left':0,'z-index':99,'width':'100%','height':Element.getHeight(document.body)+'px','backgroundColor':'#000','display':'none'});$(document).body.insert(this.overlay);Event.observe($(document),'shippingcalculator:display',this.display.bind(this));Event.observe($(document),'shippingcalculator:update',this.update.bind(this));Event.observe($(document),'shippingcalculator:close',this.close.bind(this));$('country').observe('change',function(){this.handle_buttons();}.bind(this));$('state').observe('change',function(){this.handle_buttons();}.bind(this));$('zip').observe('keyup',function(){this.handle_buttons();}.bind(this));this.form.select('input[type="radio"]').invoke('observe','click',function(){this.handle_buttons();}.bind(this));this.fix_radios();this.handle_buttons();},display:function(){this.center();this.overlay.appear({duration:0.2,from:0.0,to:0.6});this.form.appear({duration:0.2,from:0.0,to:1});},close:function(){this.overlay.fade({duration:0.2});this.form.fade({duration:0.2});},handle_buttons:function(){if(($F('country').length>0)&&($F('state').length>0)&&($F('zip').length>0)){$('update').show();}else{$('update').hide();}
var selected_shipping=this.form.select('input[type="radio"]').find(function(cb){return cb.checked;});if(!selected_shipping){if($('submit')){$('submit').hide();}}else{if($('submit')){$('submit').show();}}},fix_radios:function(){this.form.select('input[type="radio"]').each(function(btn){btn.writeAttribute('onfocus','');});},update:function(){var selected_shipping=this.form.select('input[type="radio"]').find(function(cb){return cb.checked;});new Ajax.Updater('methods','partial_shipping_methods.php',{method:'get',parameters:{country:$F('country'),state:$F('state'),zip:$F('zip'),method:selected_shipping?selected_shipping.getValue():''},onLoading:function(){$('methods').update('Updating...')},onComplete:function(){this.fix_radios();this.handle_buttons();this.center();this.form.select('input[type="radio"]').invoke('observe','click',function(){this.handle_buttons();}.bind(this));}.bind(this),onFailure:function(){$('methods').update('An error occurred while retrieving shipping methods');}});},center:function(){var view=$(document).viewport.getDimensions();var offset=$(document).viewport.getScrollOffsets();this.form.setStyle({'top':((view.height-this.form.getHeight())/2)+offset.top+'px','left':((view.width-this.form.getWidth())/2)+'px'});}});