imFile=["script/image15.jpg","script/image2.jpg","script/image3.jpg","script/image1.jpg"];
slideInt=1000;
imNo=0;
imLoad=false;
var slideTimeId;
imMax=imFile.length;
document.write("<div align='center'>");
document.write("<img src="+imFile[0]+" name='pic'><br><br>");
document.write("<form name='picForm'>");
document.write("<input type='button' value='４コマ待合所' onclick='slideLoad()' name='picBt'></form>");
document.write("</div>");
document.write("<div align='right'>");
document.write("</div>");

function slideLoad()
{
   if(imLoad==false)
   {
      imLoad=true;
      document.picForm.picBt.value="停止";
      slideTimeId=setInterval("slideRun()",slideInt);
   }else{
      imLoad=false;
      document.picForm.picBt.value="再生";
      clearInterval(slideTimeId);
   }
}
function slideRun()
{
   imNo++;
   if(imNo>=imMax){imNo=0;}
   document.pic.src=imFile[imNo];
}