Javascript: How to prevent double clicks on submit button

This solution uses timers, so in accidental clicks which do not lead into postback it allows to resubmit after period is over

/* This disables Double clicks on submit buttons */
var currentClick;
var timerSet;

function ClearClick()
{
    currentClick = '';
    timerSet = false;
}

function DC(id)
{
    var retVal = !(id == currentClick);
    currentClick = id;

    if (!timerSet)
    {
        setTimeout('ClearClick()',10000);
        timerSet = true;
    }
    return retVal;
}