// JavaScript Document
<!--
var st = 1;
function scroll() {
	if (st == 1){
		enlayer1.style.display = 'none';
		enlayer2.style.display = '';
		enlayer3.style.display = 'none';
		enlayer4.style.display = 'none';
		enlayer5.style.display = 'none'; 
		if (document.all.enlayerB1) {
			enlayerB1.style.display = 'none';
			enlayerB2.style.display = '';
			enlayerB3.style.display = 'none';
			enlayerB4.style.display = 'none';
			enlayerB5.style.display = 'none';
		}
	}else if (st == 2){
		enlayer1.style.display = 'none';
		enlayer2.style.display = 'none';
		enlayer3.style.display = '';
		enlayer4.style.display = 'none';
		enlayer5.style.display = 'none';
		if (document.all.enlayerB1) {
			enlayerB1.style.display = 'none';
			enlayerB2.style.display = 'none';
			enlayerB3.style.display = '';
			enlayerB4.style.display = 'none';
			enlayerB5.style.display = 'none';
		}
	}else if (st == 3){
		enlayer1.style.display = 'none';
		enlayer2.style.display = 'none';
		enlayer3.style.display = 'none';
		enlayer4.style.display = '';
		enlayer5.style.display = 'none';
		if (document.all.enlayerB1) {											enlayerB1.style.display = 'none';
			enlayerB2.style.display = 'none';
			enlayerB3.style.display = 'none';
			enlayerB4.style.display = '';
			enlayerB5.style.display = 'none';
		}
	}else if (st == 4){
		enlayer1.style.display = 'none';
		enlayer2.style.display = 'none';
		enlayer3.style.display = 'none';
		enlayer4.style.display = 'none';
		enlayer5.style.display = '';
		if (document.all.enlayerB1) {
			enlayerB1.style.display = 'none';
			enlayerB2.style.display = 'none';
			enlayerB3.style.display = 'none';
			enlayerB4.style.display = 'none';
			enlayerB5.style.display = '';
		}
	}else if (st == 5){
		enlayer1.style.display = '';
		enlayer2.style.display = 'none';
		enlayer3.style.display = 'none';
		enlayer4.style.display = 'none';
		enlayer5.style.display = 'none';
		if (document.all.enlayerB1) {
			enlayerB1.style.display = '';
			enlayerB2.style.display = 'none';
			enlayerB3.style.display = 'none';
			enlayerB4.style.display = 'none';
			enlayerB5.style.display = 'none';
		}
	}
	st++;
	if (st > 5) {
		st = 1;
	}
}
//-->
function addtocar(id,num)
{
	var ctrlwindow;
	ctrlwindow = window.open('shopcar.asp?action=add&id='+id+'&num='+num,"_blank");
	ctrlwindow.focus();
}
function modifyCounts(idx)
{
	var iform = eval("document.frmModify"+idx+".cnt" + idx);
	quantity = iform.value;
	location.replace('shopcar_list.asp?flag=修改数量&BookArrayNo='+idx+'&book='+quantity);
}
function up_qty(idx){
	var iform = eval("document.frmModify"+idx+".cnt" + idx);
	var old_qty = 0;
	old_qty = parseInt(iform.value);
	iform.focus();		
	iform.value++;
	value_change = 1;	
	return;
}
	
function down_qty(idx){
	var iform = eval("document.frmModify"+idx+".cnt" + idx);
	var old_qty = 0;
	old_qty = parseInt(iform.value);
	iform.focus();	
	if(old_qty > 1 ){
		if( old_qty > 0 ){
			iform.value--;
		}	
	}
	value_change = 1;
	return;
}
function check_quantity(idx) {
		string_check = "0";
		var iform = eval("document.frmModify"+idx+".cnt" + idx);
		quantity = iform.value

		for(i= 0 ; i < quantity.length ; i++) {
			var val = "0123456789";
				if ( parseInt(val.indexOf(quantity.substring(i,i+1))) < 0) {
					string_check = "1";
				}			
		}	
		
		if ( string_check == "1"){
			alert("数量输入错误，请重新输入。");
			quantity = 1 ;
			iform.focus();
			return ;
		}

		if (parseInt(quantity) <= 0 ){
			alert("数量输入错误，请重新输入。");
			quantity = 1 ;
			iform.focus();
			return ;
		}
}
var value_change = 0;

function value_check() {
	value_change = 1;
}