dans la partie body

<SCRIPT LANGUAGE="JavaScript"> <!-- document.write("<FORM NAME=\"boite\">"); document.write("<INPUT TYPE=\"TEXT\" NAME=\"champ\" SIZE=\"40\">"); document.write("</FORM>"); majmin(); //--> </SCRIPT>

dans la partie head

<script language="JavaScript"> var count = -1; var counter; var nchar var speedtogo = 150 var txt = new Array(); txt1 = "votre texte"; txt2 = "VOTRE TEXTE"; function majmin() { count++ if(count == 0){ document.boite.champ.value = txt1 } if(count == 1){ document.boite.champ.value = txt2.substring(0, 1) + txt1.substring(23, 1) } if(count > 1){ txt3 = txt1.substring(0, count - 1) + txt2.substring(count - 1, count) + txt1.substring(23, count) document.boite.champ.value = txt3 } if(count == txt1.length){ count = -1 } counter = setTimeout("majmin()",speedtogo); } //--> </script>