//动态删除行
function deleteRow(obj,tablename){
var index=obj.parentNode.parentNode.rowIndex;
var table= document.getElementById(tablename);
table.deleteRow(index);
}
//删除所有行(除了标题行)
function deleteAllRow(tablename){
var table= document.getElementById(tablename);
var length = table.rows.length;
for(i=1;i=0){
b=arr[0];
for(var j=1;j<=i;j++){
b=b+","+ arr[j];
}
}
return b;
}