function AbrirVentana(imagesrc,winwidth,winheight){
winleft=(screen.width-winwidth)/2;
wintop=(screen.height-winheight)/2;
var look='top='+wintop+',left='+winleft+',width='+winwidth+',height='+winheight+','
popwin=window.open("","",look)
popwin.document.open()
popwin.document.write('Imagen Galería
')
popwin.document.close()
}