Função para maximizar a janela ao abrir

function maxWindow(){
window.moveTo(0,0);
if (document.all){
top.window.resizeTo(screen.availWidth,screen.availHeight);
}else if (document.layers||document.getElementById){
if (top.window.outerHeight top.window.outerHeight = screen.availHeight;
top.window.outerWidth = screen.availWidth;
}
}
}