<input id="Textbox1" type="text" />

<input id="Button1" type="button" value="Convert тире Blanks" onclick="return ConvertToBlanks()" />

<input id="Button2" type="button" value="Remove Dashes" onclick="return RemoveDashes()" />

function ConvertToBlanks () {

Var = "-";

Var = document.getElementById textBoxObject ("Textbox1");

Var TextString = textBoxObject.value;

Var newTextString textString.replace = (/-/gi, );

Alert (newTextString);

}

function RemoveDashes () {

Var = document.getElementById textBoxObject ("Textbox1");

Var TextString = textBoxObject.value;

Var newTextString textString.replace = (/-/gi, );
Alert (newTextString);

}

    function tire (){
  var el = document.getElementById("Textbox1");
  if (el != null) {
     var textstring=el.Value;
     textstring=textstring.replace( /-/gim, ""); 
     alert(textstring);
    
   }

else return false;
}