Using js instead of php - syntax error

[bsde1245]

<script type="text/javascript">
    for(row = 0; row < 8; row++) {
      document.write("<div style='clear:both'>");
      for(col = 0; col < 3; col++) {
        document.write('<input type="text" style="float:left;" name = "'row+":"+col'" id="'row+":"+col'">');
      }
      document.write("</div>");
    }
    </script>

I have a syntax error in line
document.write('<input type="text" style="float:left;" name = "'row+":"+col'" id="'row+":"+col'">');
Please correct it. thanks.