function top_img() {
var top_img = new Array(
   '<img src="image/home_main001.jpg" alt="私たちは利用してくださる方&#13;&#10;ひとりひとりのために&#13;&#10;最善を尽くすことに誇りをもつ&#13;&#10;We will take pride in delivering optimum services remembering always that each patient is our ultimate customer." width="950" height="231" />',
   '<img src="image/home_main002.jpg" alt="私たちは利用してくださる方&#13;&#10;ひとりひとりのために&#13;&#10;最善を尽くすことに誇りをもつ&#13;&#10;We will take pride in delivering optimum services remembering always that each patient is our ultimate customer." width="950" height="231" />',
   '<img src="image/home_main003.jpg" alt="私たちは利用してくださる方&#13;&#10;ひとりひとりのために&#13;&#10;最善を尽くすことに誇りをもつ&#13;&#10;We will take pride in delivering optimum services remembering always that each patient is our ultimate customer." width="950" height="231" />',
   '<img src="image/home_main004.jpg" alt="私たちは利用してくださる方&#13;&#10;ひとりひとりのために&#13;&#10;最善を尽くすことに誇りをもつ&#13;&#10;We will take pride in delivering optimum services remembering always that each patient is our ultimate customer." width="950" height="231" />',
   '<img src="image/home_main005.jpg" alt="私たちは利用してくださる方&#13;&#10;ひとりひとりのために&#13;&#10;最善を尽くすことに誇りをもつ&#13;&#10;We will take pride in delivering optimum services remembering always that each patient is our ultimate customer." width="950" height="231" />'
	  );
   var selectnum = Math.floor((Math.random() * 100)) % top_img.length;
   document.write(top_img[selectnum]);
}