code wrong somewhere

[Gubbins]

hi,

 

this bit of Java is the put emoticons into a message box, it always puts them at the end of the message and not were the cursor is flashing, anychance someone can work this out please?

 

var textarea;

function addcode(code)
{
textarea = document.formsend.msg;
if (document.selection)   
    {   
	textarea.focus();   
        var sel = document.selection.createRange();    
        sel.text = "["+code+"]" + sel.text + "[/"+code+"]";   
    } 
    else
    {
	var len = textarea.value.length;   
	var start = textarea.selectionStart;   
	var end = textarea.selectionEnd;   
	var sel = textarea.value.substring(start, end);   
  
  		var replace = "["+code+"]" + sel + "[/"+code+"]";   
  
		textarea.value =  textarea.value.substring(0,start) + replace + textarea.value.substring(end,len);
    }
}

[ignace]

http://alexking.org/blog/2003/06/02/inserting-at-the-cursor-using-javascript

[Gubbins]

http://alexking.org/blog/2003/06/02/inserting-at-the-cursor-using-javascript

 

looks like that code would work but there is to much to edit for me to do it i.e.:-

myField.value = myField.value

unsure what to put in here!