variable de javascript a php en a href

[chalchis]

echo ("<script language=\"javascript\">\n");
echo ("document.write('<a href=\"../Imagenes/?rea='+winW+'&tipo=10&ruta=16\" rel=\"lightbox\" title=\"\">');\n");
echo ("document.write('<IMG SRC=\"../Imagenes/aim_online.jpg?filename=Imagenes/aim_online.jpg&width=$uno&height=$dos\" WIDTH=\"$uno\" HEIGHT=\"$dos\" VSPACE=\"8\" class=\"thum\" onmouseover=\"this.className=\'thum_sobre\'\">');\ n");
echo ("document.write('</a>');\n");
echo ("</script>");