function tancaDiv()
{
    var obj = document.getElementById('contenidor_missatge');
    document.body.removeChild(obj);
    var obj = document.getElementById('tapador');
    document.body.removeChild(obj);
    //window.toolbars = 1;
}

function ponerDiv()
{
   // window.toolbars = 0;
    if (!document.getElementById("tapador"))
    {
        var ndiv = document.createElement('div');
        //ndiv.setAttribute('id','tapador');
        //ndiv.setAttribute('class','transparent');
        ndiv.id = 'tapador';
        //ndiv.style.height = '100%';
        ndiv.style.height = '100%';
        ndiv.style.width = '100%';
        
        
        //seria gran algo així
        //ndiv.style.height = document.body.height;
        //ndiv.style.width = document.body.width;
        
        
        ndiv.style.position = 'absolute';
        ndiv.style.top = '0';
        ndiv.style.left = '0';
        ndiv.style.backgroundColor = '#ffffff';
        
            ndiv.style.opacity = '0.6';
            ndiv.style.MozOpacity = '0.6';
            ndiv.style.filter = "alpha(opacity = 60)";
            //ndiv.setAttribute('style','filters:alpha(opacity=60)');
        document.body.appendChild(ndiv);   
        //ndiv.className = 'transparent';
        //alert('hi és'); 
    }
   
    if (!document.getElementById("contenidor_missatge"))
    {
        var pdiv = document.createElement('div');
        pdiv.id = 'contenidor_missatge';
        pdiv.style.height = '100%';
        pdiv.style.width = '100%';
        pdiv.style.top = '0';
        pdiv.style.left = '0';
        pdiv.style.position = 'absolute';
        document.body.appendChild(pdiv);
    } 
        
        cridaiposa('plantillas/apertura_sagunto.html','contenidor_missatge');
    
    
}