function mouseOver(id)
 {
	i=id;
	switch (i)
	  {
	  case 1:
		  document.getElementById(i).src ="images/xplane_g2.jpg";
		  break;
	  case 2:
		  document.getElementById(i).src ="images/proj_g2.jpg";
		  break;
	  case 3:
		  document.getElementById(i).src ="images/community_g2.jpg";
		  break;
	  }
 }

 function mouseOut(id)
 {
	 i=id;
		switch (i)
		  {
		  case 1:
			  document.getElementById(i).src ="images/xplane_g1.jpg";
			  break;
		  case 2:
			  document.getElementById(i).src ="images/proj_g1.jpg";
			  break;
		  case 3:
			  document.getElementById(i).src ="images/community_g1.jpg";
			  break;
		  }
 }