function printing(tb)
{
var nw = window.open('','','width=800,height=600')
nw.document.open("text/html","GB2312")
nw.document.write("")
nw.document.write("")
nw.document.write(document.getElementById(tb).outerHTML)
nw.document.write("document.all.wb.ExecWB(7,1)")
}
