j$ = jQuery.noConflict();


function checkAdvanced_search(){
	var alert_ms ='';
	var productName = j$.trim(j$('#productName').val());
	
	var author = j$.trim(j$('#author').val());

	var productISBN = j$.trim(j$('#productISBN').val());
	var publisher = j$.trim(j$('#publisher').val());

//	alert('productName =='+productName+'\nauthor'+author);

	var isChoise_Chi = isChoiseOption('category_Chi');
	var isChoise_Eng = isChoiseOption('category_Eng');
	
	
	//出版日期范圍
	var publishYear_From = j$.trim(j$('#publishYear_From').val());
	var publishYear_To = j$.trim(j$('#publishYear_To').val());
	
	if(!Utils.isInt(publishYear_From))publishYear_From= false;
	if(!Utils.isInt(publishYear_To))publishYear_To= false;
	
	
	var isPublishYear = false;
	if(publishYear_From && publishYear_To)	isPublishYear=true;
	
	
	//價格范圍
	var price_from = j$.trim(j$('#price_from').val());
	var price_to = j$.trim(j$('#price_to').val());
	
	if(!Utils.isNumber(price_from))price_from= false;
	if(!Utils.isNumber(price_to))price_to= false;
	
	var isPrice = false;
	if(price_from && price_to)	isPrice=true;
	
	
		
	
	//(productName || author || productISBN || publisher) && (
	if( (productName.length+author.length+productISBN.length+publisher.length > 1)  
		|| isChoise_Chi || isChoise_Eng ||isPublishYear || isPrice)
	return true;
	else{
		
		alert('請輸入搜尋條件！\nPlease enter search terms!');
		return false;
	}
	
}

function isChoiseOption(op_id){
	var category= j$('#'+op_id).val();
	var isChoise = true;
	if(category=='all')  isChoise=false;
	
	return isChoise;	
}