if (screen.width == '640') {document.write ('<LINK href="style.css" rel="stylesheet" type="text/css">');}
  else {if (screen.width == '800') {document.write ('<LINK href="style.css" rel="stylesheet" type="text/css">');}
    else {if (screen.width == '1024') {document.write ('<LINK href="style.css" rel="stylesheet" type="text/css">');}
      else {if (screen.width == '1280') {document.write ('<LINK href="style.css" rel="stylesheet" type="text/css">');}
        else {document.write ('<LINK href="widt.css" rel="stylesheet" type="text/css">');}
        }
      }
    }