Adding different language keyboard to advanced/quick reply editor box

[wezzeh]

So basically what I want to do is, to add a script to the editor that allows switching between the languages while typing by pressing simple "~". I have the javascript but dont know where and how to add the setting to the editor. I want simple "checkbox" to appear with text next to it "Georgian keyboard" and to toggle it by pressing "~"

basically something like this

<li>
<input type="checkbox" id="geoKeys" checked="checked"/> ***4325;***4304;***4320;***4311;***4323;***4314;***4304;***4307; ***4332;***4308;***4320;***4304;
</li>

the script is originally for IPB but I think it should work fine with vbulletin.

here's the javascript

eng=new Array(97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,87,82,84,83,67,74,90);
geo=new Array(4304,4305,4330,4307,4308,4324,4306,4336,4312,4335,4313,4314,4315,4316,4317,4318,4325,4320,4321,4322,4323,4309,4332,4334,4327,4310,4333,4326,4311,4328,4329,4319,4331,91,93,59,39,44,46,96);


function keyfilter_num(evt) {
	evt = (evt) ? evt : window.event
	var charCode = (evt.which) ? evt.which : evt.keyCode
	if (charCode!=46 &&charCode > 31 && (charCode < 48 || charCode > 57)) {
		status = "This field accepts numbers only."
		return false
	}
	status = ""
	return true
}

function keyfilter_dig(evt) {
	evt = (evt) ? evt : window.event
	var charCode = (evt.which) ? evt.which : evt.keyCode
	if ( charCode > 31 && (charCode < 48 || charCode > 57)) {
		status = "This field accepts numbers only."
		return false
	}
	status = ""
	return true
}

function ValidEmail(EmailAddr) {
	var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/;
	var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/;
	
	var SpecChar="!#$%^&*()'+{}[]\|:;?/><,~`" + "\"";
	var frmValue = new String(EmailAddr);
	var len = frmValue.length;
	
	if( len < 1 ) { return false; }
	for (var i=0;i<len;i++)
	{
				temp=frmValue.substring(i,i+1)
				if (SpecChar.indexOf(temp)!=-1)
		 		{
					return false;
				}
	}	
	
	if(!reg1.test(frmValue) && reg2.test(frmValue)) 
	{ 
		return true;
	}
	
	return false;
}

function keyfilter_alnum(evt) {
	evt = (evt) ? evt : window.event
	var charCode = (evt.which) ? evt.which : evt.keyCode
	if (!  ((charCode >= 48 && charCode <= 57)||(charCode >= 97 && charCode <= 122)||(charCode >= 65 && charCode <= 90)||charCode==95)  ) {
		status = "This field accepts 'a'-'z','A'-'Z','0'-'9' and '_' only."
		return false
	}
	status = ""
	return true
}

function makeGeo(ob,e) {
	code = e.keyCode ? e.keyCode : e.which ? e.which : e.charCode;	
	
	if (code==96) {
		document.getElementById('geoKeys').checked = !document.getElementById('geoKeys').checked;
		return false;
	}

	if (e.which==0) return true;
	
	if (!document.getElementById('geoKeys').checked) return true;
	


	//alert(' e.keyCode='+e.keyCode+'\n'+'e.which='+e.which+'\n'+'e.charCode='+e.charCode);
	
	var found = false;
	for (i=0; i<=geo.length; i++) {
		if (eng[i]==code) {
			c=geo[i];
			found = true;
		}
	}
	
	if ( found ) {
		if (document.selection) {
			sel = document.selection.createRange();
			sel.text = String.fromCharCode(c);
		} else {
			if (ob.selectionStart || ob.selectionStart == '0') {
				var startPos = ob.selectionStart;
				var endPos = ob.selectionEnd;
				ob.value = ob.value.substring(0, startPos) + String.fromCharCode(c) + ob.value.substring(endPos, ob.value.length);
				ob.selectionStart = startPos+1;
				ob.selectionEnd = endPos+1;
			} else {
				//ob.value = ob.value + String.fromCharCode(c);
				return true;
			}
		}
		return false;
	} else {
		return true;
	}

}

[wezzeh]

I'm sorry, I think this topic more fits into "vBulletin Hack and Modification Support" forum, if a moderator could move it I'd appreciate it a lot