function win1(str,w,h)
{
		window.open(str, "", "width="+w+", height="+h+", top="+((screen.height-h)/3)+", left="+((screen.width-w)/2)+"");
}

function win2(str,w,h)
{
		open(str, "", "width="+w+", height="+h+", top="+((screen.height-h)/2)+", left="+((screen.width-w)/2)+",status=yes");
}


function win3(str,w,h)
{
		window.open(str, "", "width="+w+", height="+h+", top="+((screen.height-h)/3)+", left="+((screen.width-w)/2)+",status=yes,scrollbars=yes,resizable=yes");
}