function muestraImagen(img){
img1= new Image();
img1.src=(img);
espera(img);
return false;
}
function espera(img){
if((img1.width!=0)&&(img1.height!=0)){
verImagen(img);
}
else{
f="espera('"+img+"')";
setTimeout(f,50);
}
}
function verImagen(img){
w=img1.width+50;
h=img1.height+80;
x = Math.floor((screen.width-w)/2)-5;
y = Math.floor((screen.height-h)/2)-25;
handle=window.open(img,"imagen","width=" + w + ",height=" + h + ",left=" + x + ",top=" + y + ",scrollbars=1" );
d=handle.document;
d.open();
d.write(''+document.title+'');
d.write('');
d.write('');
d.write('
');
d.write(' |
');
d.write('| |
');
d.write('
');
d.write('');
d.close();
if (!handle.opener)
handle.opener=self;
handle.focus();
}