I need JAVASCRIPT help - code editing (counting)

Hello, everyone.

I found this JavaScript online - it's for calculating translation prices. Everything is working alright, except the characters count. This script now calculates all the characters, including spaces. I would like it to count only letters/numbers without spaces. Is that possible to edit?

Here's the code.js code

function countit(vorm){
	
	// Tähemärkide sisu
	var sisu = vorm.form.tahemargid.value;
	
	// Tähemärkide pikkus
	vorm.form.tahemarke.value = sisu.length;
	var tahemargid = vorm.form.tahemarke.value;
	
	// SÅ‘nadeks jaotamine
	var sonad = sisu.split(" ");
	var sonadehulk = sonad.length;
	
	//SÅ‘nade arv
	if (sonadehulk == 1) {
		vorm.form.sonadehulk.value = 0;	
	}
	else {
		vorm.form.sonadehulk.value = sonadehulk;
	}
	
	// Lehekülgede arv
	var pikkus = (sisu.length / 1500).toFixed(1);
	vorm.form.lehekylgi.value = pikkus;
	var lehekylgi = vorm.form.lehekylgi.value;
	
	/* Tőlkebüroo valitud hind */
	var tolkeburoohind = vorm.form.buroohind.value;
	
	/* Kliendi enda lisatud hind */
	var kliendihind = vorm.form.kliendivalitudhind.value;
	
	/* Kujundamise tasud */
	var lisatasu =  vorm.form.toimetamine.value;
	var lisatasud = lisatasu * lehekylgi;
	
	/* TÅ‘lke hinna arvutamine */
	var maksuvaba;
	
	if (tolkeburoohind == 0 && kliendihind == 0){alert("Select from and to languages or enter price per 1 page");}
	if (tolkeburoohind != 0 && kliendihind != 0){alert("Both options cannot be chosen simultaneously. Select the language combination (from and to languages) or enter price per 1 page.");}
	
	
	if (tolkeburoohind == 0 && kliendihind != 0 ){
		maksuvaba = lehekylgi * kliendihind + lisatasud;
	}
	if (kliendihind == 0 && tolkeburoohind != 0){
		maksuvaba = lehekylgi * tolkeburoohind + lisatasud;
	}
	vorm.form.maksuta.value = maksuvaba.toFixed(2);
	
	/* Käibemaksuga */
	var maksuga = maksuvaba * 0.20;
	maksuga = 0;
	var loplikhind = maksuvaba + maksuga;
	vorm.form.maksudega.value =  "EUR " + loplikhind.toFixed(2);
	
	//var remark = getElem

}

Code (markup):

I will be very glad of every help.


Cheers,


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