function GetAllPrice()
{

var singerprice=document.getElementById("tb_Price");
singerprice=singerprice.value;


var number=document.getElementById("tb_Number");
number=number.value;

var price= singerprice.split("元");

singerprice=price[0];

var allprice=(singerprice*number).toFixed(2);

var txt_allprice=document.getElementById("tb_AllPrice");

txt_allprice.value=allprice+"元";
}