wx = 820;
wy = 600;
x = (screen.width  - wx) / 2;
y = (screen.height - wy) / 2;

function openwin(){
wo=window.open("toshinet.html","submain","width=820,height=600,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,favorites=no,resizable=no,left="+x+",top="+y+",width="+wx+",height="+wy);
wo.focus();
}


function maximizeWin()
{
	window.moveTo(0, 0);
	window.resizeTo(screen.width, screen.height);
}

maximizeWin();