if (document.images) {

             hole1on = new Image(148,15);
             hole1on.src = "../images/hole1_ro.gif";
             hole1off = new Image(148,15);
             hole1off.src = "../images/hole1.gif";
			 
			 hole2on = new Image(148,15);
             hole2on.src = "../images/hole2_ro.gif";
             hole2off = new Image(148,15);
             hole2off.src = "../images/hole2.gif";
			 
			 hole3on = new Image(148,15);
             hole3on.src = "../images/hole3_ro.gif";
             hole3off = new Image(148,15);
             hole3off.src = "../images/hole3.gif";
			 
			 hole4on = new Image(148,15);
             hole4on.src = "../images/hole4_ro.gif";
             hole4off = new Image(148,15);
             hole4off.src = "../images/hole4.gif";
			 
			 hole5on = new Image(148,15);
             hole5on.src = "../images/hole5_ro.gif";
             hole5off = new Image(148,15);
             hole5off.src = "../images/hole5.gif";
			 
			 hole6on = new Image(148,15);
             hole6on.src = "../images/hole6_ro.gif";
             hole6off = new Image(148,15);
             hole6off.src = "../images/hole6.gif";
			 
			 hole7on = new Image(148,15);
             hole7on.src = "../images/hole7_ro.gif";
             hole7off = new Image(148,15);
             hole7off.src = "../images/hole7.gif";
			 
			 hole8on = new Image(148,15);
             hole8on.src = "../images/hole8_ro.gif";
             hole8off = new Image(148,15);
             hole8off.src = "../images/hole8.gif";
			 
			 hole9on = new Image(148,15);
             hole9on.src = "../images/hole9_ro.gif";
             hole9off = new Image(148,15);
             hole9off.src = "../images/hole9.gif";
			 
			 hole10on = new Image(148,15);
             hole10on.src = "../images/hole10_ro.gif";
             hole10off = new Image(148,15);
             hole10off.src = "../images/hole10.gif";
			 
			 hole11on = new Image(148,15);
             hole11on.src = "../images/hole11_ro.gif";
             hole11off = new Image(148,15);
             hole11off.src = "../images/hole11.gif";
			 
			 hole12on = new Image(148,15);
             hole12on.src = "../images/hole12_ro.gif";
             hole12off = new Image(148,15);
             hole12off.src = "../images/hole12.gif";
			 
			 hole13on = new Image(148,15);
             hole13on.src = "../images/hole13_ro.gif";
             hole13off = new Image(148,15);
             hole13off.src = "../images/hole13.gif";
			 
			 hole14on = new Image(148,15);
             hole14on.src = "../images/hole14_ro.gif";
             hole14off = new Image(148,15);
             hole14off.src = "../images/hole14.gif";
			 
			 hole15on = new Image(148,15);
             hole15on.src = "../images/hole15_ro.gif";
             hole15off = new Image(148,15);
             hole15off.src = "../images/hole15.gif";
			 
			 hole16on = new Image(148,15);
             hole16on.src = "../images/hole16_ro.gif";
             hole16off = new Image(148,15);
             hole16off.src = "../images/hole16.gif";
			 
			 hole17on = new Image(148,15);
             hole17on.src = "../images/hole17_ro.gif";
             hole17off = new Image(148,15);
             hole17off.src = "../images/hole17.gif";
			 
			 hole18on = new Image(148,15);
             hole18on.src = "../images/hole18_ro.gif";
             hole18off = new Image(148,15);
             hole18off.src = "../images/hole18.gif";
			 
			 hole19on = new Image(148,15);
             hole19on.src = "../images/hole19_ro.gif";
             hole19off = new Image(148,15);
             hole19off.src = "../images/hole19.gif";
			 
}
     function img_on(imgName) {
             if (document.images) {
             imgOn = eval(imgName + "on.src");
             document [imgName].src = imgOn;
             }
     }
     function img_off(imgName) {
             if (document.images) {
             imgOff = eval(imgName + "off.src");
             document [imgName].src = imgOff;
             }
	}