function startText() {
  for (i=0; i<ctnt.length; i++) insertText(i);
  window.setTimeout("scroll()",wait);
}

function scroll() {
  if (mouse && flag) {
    for (i=0;i<ctnt.length;i++) {
      if (temp == 0 && imgflag) {
	for (j=0;j<ctnt_i.length;j++) {
	  tmp = document.getElementById('img_area'+j).style;
	  if (count % ctnt_i.length == j) {
	    tmp.display = '';
	  } else {
	    tmp.display = 'none';
	  }
	}
	imgflag=false;
	count++;
      }
      temp++;
      tmp = document.getElementById('scroll_area'+i).style;
      tmp.top = parseInt(tmp.top)-speed;
      if (parseInt(tmp.top) <= height*(-1)) {
        tmp.top = height*(ctnt.length-1);
      }
      if (temp>(amount-1)*ctnt.length) {
        flag=false;
        temp=0;
        window.setTimeout("flag=true;temp=0;imgflag=true;",wait);
      }
    }
  }
  window.setTimeout("scroll()",1);
}
function insertText(i) {
  htmlstr='<div style="left: 0px; width: 315px; position: absolute; top: '+(height*i+1)+'px" id="scroll_area'+i+'">\n';
  htmlstr+=ctnt[i]+'\n'+'</div>\n';
  document.write(htmlstr);
}