documento.cuerpo.estilo.imagen de fondo

ventana.onload?=?función?()?{

document.body.onclick?=?función?()?{

var?pic ?=?this.style.backgroundImage;

if?(pic.match('bg1')?||?!pic)?{

pic?=?'url( ./images/bg2.png)';

}?else?{

pic?=?'url(./images/bg1.png);'

}

}

} .

element.style.backgroundImage ?stylelt;p?style='font-size:?16'?id ='p'gt;lt;/pgt;

lt;scriptgt;

alert(document.getElementById('p').style.fontSize)

lt;/scriptgt;

csswindow.getComputedStylelt;p?style='font-size:?16'?id='p'gt;lt;/pgt;

lt ;scriptgt; alerta(window.getComputedStyle(document.getElementById('p')).fontSize)

lt;/scriptgt;