function showpost(type)
{
if(type==0)
{
document.getElementById("tbPost").style.display="none";
}
else
{
var x = (screen.availWidth-300)/2+120;
var y = 485;
var tbcontrl=document.getElementById("tbPost");
tbcontrl.style.left=x+"px";
tbcontrl.style.top=y+"px";
tbcontrl.style.display="block";
}
}