function change_photo(photo_no){
	clearInterval(timer);
	timer = setInterval("auto_change_photo()",7000);
		$('#slide_viewer_photo').hide();
			$('#slide_viewer_photo').html("<a href='" + url_array[(photo_no-1)] + "' target='_blank' ><img src='filedata/tbl_index_setting/vie/1_" + photo_no + "_h150." + phototype_array[(photo_no-1)] + "' border='0'/></a>");
			//$('#slide_viewer_photo').fadeIn(600);
			$('#slide_viewer_photo').show();
			opened_image = photo_no;
		
}

function auto_change_photo(max_photo){
		opened_image = parseInt(opened_image + 1);
		if(parseInt(opened_image) > max_photo) opened_image =1;
		if(max_photo == '1') opened_image =1;
		$('#slide_viewer_photo').hide();
		
			$('#slide_viewer_photo').html("<a target='_blank' href='" + url_array[(opened_image-1)] + "'  ><img src='filedata/tbl_index_setting/vie/1_" + opened_image + "_h150." + phototype_array[(opened_image-1)] + "' border='0'/></a>");
			$('#slide_viewer_photo').fadeIn(600);
			$('#slide_viewer_photo').show();
		
}


function set_interval(max_photo){
		timer = setInterval("auto_change_photo(" + max_photo+ ")",10000);
}	

function searchfrm()
{
	var frm = document.forms[0];

	if(frm.search_book.value == "")
	{
		alert("請輸入搜尋關鍵字。");
	}
	else
	{	
		frm.dowhat.value = "search_book";
		frm.action = "book_search.php";
		frm.submit();
	}
}

function chksearchform(){
	var frm = document.forms[0];
	var errmsg = "";
	var cat_errmsg = "";
	var checked_cat = 0;
	var count_cat = frm.book_cat.length;
	var i=0;
	var book_cat_ar = "";

	if (frm.author_name.value == "" && frm.book_name.value == "" && frm.product_no.value == "" && frm.book_price.value == "" && frm.book_price2.value == "" && frm.book_membership_price.value == "" && frm.book_membership_price2.value == "" && frm.isbn.value == ""){
		errmsg += "請輸入搜尋關鍵字";
	}

	//alert(count_cat);
	//alert(frm.book_cat[i].value);

	for(i=0; i<count_cat; i++){
			if(frm.book_cat[i].checked)	{
						//alert(frm.book_cat[i].value);
						checked_cat = checked_cat+1;
						book_cat_ar += frm.book_cat[i].value + ",";
		  }
		}

    if(errmsg != "" && checked_cat>0) errmsg ="";
    if(errmsg != "" && checked_cat == 0) errmsg = "請輸入搜尋關鍵字 或 選擇書籍類別。";

	if(errmsg == "") {
		frm.action = "product_list.php";
		frm.book_cat_ar.value = book_cat_ar;
		frm.submit();
		return true;
	} 
		alert(errmsg)
		return false;

}

function chkgiftsearchform()
{
	var frm = document.forms[0];

	if(frm.gift_name.value == "" && frm.product_cat.value == "" && frm.product_no.value == "" && frm.gift_price.value == "" && frm.gift_membership_price.value == "" && frm.gift_price2.value == "" && frm.gift_membership_price2.value == "")
	{
		alert("請輸入搜尋關鍵字。");
	}
	else
	{
		frm.action = "gift_list.php";
		frm.submit();
	}
}

function getsearchpage(d)
{
	var frm = document.forms[0];

	frm.dowhat.value = d;
	frm.submit();
}

function product_list_display_setting()
{
	var frm = document.forms[0];

	if(frm.ChkshowImg.checked)
	{
		frm.showImgField.value = 'img';
	}
	else
	{
		frm.showImgField.value = "";
	}

	/*if( frm.ChkshowBuy.checked )
	{
		frm.showBuyField.value = 'buy';
	}
	else
	{
		frm.showBuyField.value = "";
	}*/

	if(frm.ChkshowHot.checked)
	{
		frm.showHotField.value = 'hot';
	}
	else
	{
		frm.showHotField.value = "";
	}

	if( frm.ChkshowLatest.checked )
	{
		frm.showLatestField.value = 'latest';
	}
	else
	{
		frm.showLatestField.value = "";
	}

	if( frm.ChkshowDiscount.checked )
	{
		frm.showDiscountField.value = 'discount';
	}
	else
	{
		frm.showDiscountField.value = "";
	}

	if( frm.ChkOtherProduct.checked )
	{
		frm.showOtherProduct.value = 'other';
	}
	else
	{
		frm.showOtherProduct.value = "";
	}
	frm.pg.value = 1;
	frm.submit();
}

function chkOrder(){
	var frm = document.forms[0];
	var errmsg = "";
	
	if(frm.contact_person.value == "") errmsg += "請填入聯絡人姓名.\n";
	if(frm.telephone.value == "") errmsg += "請填入電話號碼.\n";
	if(frm.telephone.value != "" && !isNumeric(frm.telephone.value)) errmsg += "請輸入有效的電話.\n"
	if(frm.email.value == "") errmsg += "請填入聯絡人電郵.\n";
	if(frm.email && frm.email.value != "" && !isEmail(frm.email.value)) errmsg += "請輸入有效電郵地址.\n"
	if(radioVal('delivery') == "") errmsg += "請選擇交收方法.\n";
	if( (radioVal('delivery') != "self" && radioVal('delivery') != "self_tst") && frm.delivery_address.value == "") errmsg += "請填寫送貨地址.\n";
	if(frm.member_title.value == "") errmsg += "請選擇身份.\n";
	
	if(errmsg == "") return true;
	alert(errmsg);
	return false;
}

function setbtn()
{
	var frm = document.forms[0];

	frm.btnSubmitOrdertoPaypal.disabled = true;
	frm.btnModify.disabled = true;
	frm.btnCancel.disabled = true;
}

function rightclick_disable(){

	//document.getElementById(id).oncontextmenu=new Function ("return false");

	document.body.onselectstart=new Function ("return false");
	document.body.oncontextmenu=new Function ("return false");

}