Ether.Camp web3 js interact with contract - what am I doing wrong?

Question

I have a working contract that I made in ether.camp with solidity, it functions as desired through the IDE contract interface and now I am trying to tie it into an html GUI with web3.

To this end I have been following a series of tutorials, but as far as I can see - what I am doing should be working but it looks like it is not connecting to the contract?

Html:

<form>
   <button id="call"  type="submit">Call</button>
</form>
<script src="https://code.jquery.com/jquery-2.2.1.min.js"></script>
<script src="dist/app.js"></script>

app.js

var async = require('async');
var Web3 = require('web3');
var ethTx = require('ethereumjs-tx');
var SolidityFunction = require('web3/lib/web3/function');

var abi = [{
    "name": "removeElement(address)",
    "type": "function",
    "inputs": [
    {
        "name": "key",
        "type": "address"
    }
    ]
}];

var sandboxId = '<my sandbox id>';
var url = 'https://<my user>.by.ether.camp:8555/sandbox/' + sandboxId;
var web3 = new Web3(new Web3.providers.HttpProvider(url));

web3.eth.defaultAccount = '0xdedb49385ad5b94a16f236a6890cf9e0b1e30392';

$( "button" ).click(function() {
    alert("button was clicked"); //just checking the jquery was working 
    var contract = web3.eth.contract(abi).at('0x17956ba5f4291844bc25aedb27e69bc11b5bda39'); //The contract address as per the ethercamp IDE
    contract.call().removeElement("0x2adc25665018aa1fe0e6bc666dac8fc2697ff9ba");
});

The removeElement(address key) function in the contract works absolutley fine from the IDE. I suspect the above code is not actually 'connecting' to the contract? Wish I could be more detailed but I'm not sure whats not working here

Thank you!

Answer 1

I wanted to ask for details, but I can't post comments.

1. It should be contract.removeElement("0x2adc25665018aa1fe0e6bc666dac8fc2697ff9ba")
2. Do you see any error messages in the browser console?
3. When you click on the button do you see the transaction in the transactions dialog of the IDE?
4. The code is built by browserify with gulp, that's why it uses CommonJS require. If you want to use web3 from the console, add window.web3 = web3;