function OptionModel(product_id,controller){
	var Controller = controller;
	var Product_id = product_id;
	var Model = $('#base_model_' + Product_id).val();
	var ModelValue = '';
	var options= [];

	$('#'+Controller+'_options_'+Product_id+' select :selected').each(function(i, selected){
		options[i] = $(selected).attr('id');
	});
	if(options.length!=undefined){	
		var i;	
		for (i in options){
		    var OptionID = (options[i].replace("option_",""));
			var OptionModel = String("option_model"+OptionID);
			if ($('#'+OptionModel).attr('value').length > 0) {
				ModelValue = $('#'+OptionModel).attr('value');
			}
		}
	}
	if (ModelValue.length == 0) {
		ModelValue = Model;
	}
	$('#model_'+Product_id).fadeOut('slow',function(){
	$('#model_'+Product_id).fadeIn('normal').text(ModelValue);
	});
	return;
}