I do always have textfield with a white border(background true, border false)
addlayer(get(thumbname));
set(layer[get(thumbname)].url,%SWFPATH%/plugins/textfield.swf);
set(layer[get(thumbname)].keep, true); set(layer[get(thumbname)].align, lefttop);
set(layer[get(thumbname)].width,get(larghezza)); set(layer[get(thumbname)].height,get(altezza));
set(layer[get(thumbname)].border,false);
set(layer[get(thumbname)].x,12); set(layer[get(thumbname)].y,12);
set(layer[get(thumbname)].vcenter,true );set(layer[get(thumbname)].css,font-family:Arial; font-size:12px; color:#ffffff; border-style: none; );
set(layer[get(thumbname)].background,true);
set(layer[get(thumbname)].backgroundcolor,0x000000);
set(layer[get(thumbname)].backgroundalpha,1);
set(layer[get(thumbname)].autowidth,false);
set(layer[get(thumbname)].autoheight,false);
set(layer[get(thumbname)].padding,2 12);
set(layer[get(thumbname)].html,get(thumb) );
set(layer[get(thumbname)].alpha,get(minalphainterf) );