how I call the contract on my webPage ?

[xulove]

thanks you give us the example
I have read your contract code,but now I want to call the contract on my webpage.I means that your "index.html" call contract by WebExtensionWallet,I want to call contract directly.
I don't konw how to do it ?
can you give me some tips?
thanks

[xulove]

these code in "index.html"

if (!!e.data.data.account){
            //document.getElementById("accountAddress").innerHTML= "Account address: " + e.data.data.account;
}
if (!!e.data.data.receipt){
            //document.getElementById("txResult").innerHTML = "Transaction Receipt\n" +JSON.stringify(e.data.data.receipt,null,'\t');
}

what it means ? and what it is for !! ?