// JavaScript function that loads the images 
 if (document.images) {
  layout_r4_c4_f2 = new Image(109 ,30); layout_r4_c4_f2.src = "images/layout_r4_c4_f2.gif";
  layout_r4_c4_f1 = new Image(109 ,30); layout_r4_c4_f1.src = "images/layout_r4_c4.gif";
  layout_r4_c7_f2 = new Image(109 ,30); layout_r4_c7_f2.src = "images/layout_r4_c7_f2.gif";
  layout_r4_c7_f1 = new Image(109 ,30); layout_r4_c7_f1.src = "images/layout_r4_c7.gif";
  layout_r4_c9_f2 = new Image(109 ,30); layout_r4_c9_f2.src = "images/layout_r4_c9_f2.gif";
  layout_r4_c9_f1 = new Image(109 ,30); layout_r4_c9_f1.src = "images/layout_r4_c9.gif";
  layout_r4_c11_f2 = new Image(109 ,30); layout_r4_c11_f2.src = "images/layout_r4_c11_f2.gif";
  layout_r4_c11_f1 = new Image(109 ,30); layout_r4_c11_f1.src = "images/layout_r4_c11.gif";
  layout_r4_c14_f2 = new Image(109 ,30); layout_r4_c14_f2.src = "images/layout_r4_c14_f2.gif";
  layout_r4_c14_f1 = new Image(109 ,30); layout_r4_c14_f1.src = "images/layout_r4_c14.gif";
  }