I'm not able to test this at the moment but I believe you should be able to pass an object into the event you have hooked up for the click event. This is shown below.
MyForm.prototype.bind = function(newTargetObj){
if(typeof newTargetObj === 'object'){
this.targetObj = newTargetObj;
}
this.targetObj.click(this.clickEvent(this.targetObj));
}
MyForm.prototype.clickEvent = function(sender){
console.log(this);
console.log(this.targetForm);
// this.targetForm.submit();
alert('click!');
};