通过js实现弹出窗口进行打印

function rundiff()
{
var aa=document.getElementById("hidvlaue").value;
if(aa =="1")
{
p();
}
else
{
retUrl();
}
}
function p()
{
var p1=document.getElementById("d1").style.display="none";
window.print();
}
function retUrl()
{
window.open('../RoleAndPwoer/UserDetail.aspx?SID=1','','toolbar=0,menubar=0,location=0,status=0,left='+(window.screen.width-800)/2+',top='+(window.screen.height-600)/2+',height=600px,width=800px,scrollbars=yes')
}