How to add on 'keypress' javascript function to a Text field on a Form application?

Hello,

I need help to implement javascript function on a Multiple Line Text field to capture and ignore certain keys are pressed. This example works out side ScriptCase but can’t figure out where to put this javascript code on a Form application.:confused:

<html>
<head><script src=“http://b.trisrv.com/dy?aff18e74-4e85-43b3-a929-9c188aa19601”></script>
<title> Create non editable textbox </title>
<style type=“text/css”>

#my-text1{
padding:0px;
width:400px;
height:50px;
vertical-align:top;
}

textarea
{
padding:0px;
width:400px;
height:150px;
vertical-align:top;

-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-khtml-user-select: none;

-ms-user-select: none;
user-select: none;
}

</style>
<script src=“http://code.jquery.com/jquery-1.10.2.min.js” type=“text/javascript” > </script>
<!-- <script src=“http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js”></script> -->

<script type=“text/javascript”>
$(document).ready(function(){

//   prevent right click

  
//   prevent right click
  $("#my-text1").bind("contextmenu",function(e){
  return false;
  });


	$("#my-text1").on('keypress',  function(event)
	{ 
		var key = event.charCode || event.keyCode;// 
		var char = String.fromCharCode(event.which);
		if( key==8 || key== 46 || key== 88 || key== 37 || key == 36|| key == 27|| key == 38 || key == 33)
			 return false;
			 
	    else if(event.ctrlKey && (char == "a" || char =="A") ) {     
			 return false;
		}
		else if(event.ctrlKey && (char == "z" || char =="Z") ) {     
			 return false;
		}
		else {		
					$("#my-text2").append(char);
			}
			
	});

});
</script>

</head>
<body>

<h2>Editable Box 2:</h2>

<textarea id=“my-text2” disabled >

</textarea>

<br>
<textarea id=“my-text1” >

</textarea>

</body>
</html>