if (document.images) {
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  top_r4_c6_f2 = new Image(73 ,23); top_r4_c6_f2.src = "imgs/layout/top_r4_c6_f2.gif";
  top_r4_c6_f1 = new Image(73 ,23); top_r4_c6_f1.src = "imgs/layout/top_r4_c6.gif";
  top_r4_c8_f2 = new Image(64 ,23); top_r4_c8_f2.src = "imgs/layout/top_r4_c8_f2.gif";
  top_r4_c8_f1 = new Image(64 ,23); top_r4_c8_f1.src = "imgs/layout/top_r4_c8.gif";
  top_r4_c10_f2 = new Image(138 ,23); top_r4_c10_f2.src = "imgs/layout/top_r4_c10_f2.gif";
  top_r4_c10_f1 = new Image(138 ,23); top_r4_c10_f1.src = "imgs/layout/top_r4_c10.gif";
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  top_r4_c12_f1 = new Image(61 ,23); top_r4_c12_f1.src = "imgs/layout/top_r4_c12.gif";
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  top_r4_c14_f1 = new Image(85 ,23); top_r4_c14_f1.src = "imgs/layout/top_r4_c14.gif";
  
  bottom_r2_c2_f2 = new Image(81 ,29); bottom_r2_c2_f2.src = "imgs/layout/bottom_r2_c2_f2.gif";
  bottom_r2_c2_f1 = new Image(81 ,29); bottom_r2_c2_f1.src = "imgs/layout/bottom_r2_c2.gif";
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  bottom_r3_c5_f1 = new Image(42 ,19); bottom_r3_c5_f1.src = "imgs/layout/bottom_r3_c5.gif";
  bottom_r3_c7_f2 = new Image(32 ,19); bottom_r3_c7_f2.src = "imgs/layout/bottom_r3_c7_f2.gif";
  bottom_r3_c7_f1 = new Image(32 ,19); bottom_r3_c7_f1.src = "imgs/layout/bottom_r3_c7.gif";
  bottom_r3_c9_f2 = new Image(59 ,19); bottom_r3_c9_f2.src = "imgs/layout/bottom_r3_c9_f2.gif";
  bottom_r3_c9_f1 = new Image(59 ,19); bottom_r3_c9_f1.src = "imgs/layout/bottom_r3_c9.gif";
  bottom_r2_c12_f2 = new Image(77 ,29); bottom_r2_c12_f2.src = "imgs/layout/bottom_r2_c12_f2.gif";
  bottom_r2_c12_f1 = new Image(77 ,29); bottom_r2_c12_f1.src = "imgs/layout/bottom_r2_c12.gif";
}