How to display an entity form based on the option set field (Multiple forms CRM2011)

Sometimes we need multiple forms based on categorisation of an entity. For example, an account can be  a customer or a competitor or a supplier etc. It is possible that we need to capture or display different fields based on the type of an account. Suppose we have different forms  for different types of account. If the user opens an account record, the system should open a appropriate form based on the type of the account.
In this example I am using account entity. I have created 2 custom forms. Now I have 3 account forms (Information, Information1, Information2). In out of the box account entity . there is a “Relationship Type” or customertypecode field to categorise the account entity. It is picklist field. I want to open a different form based on the value of the customertypecode field . Here is the code.

function showForm() {

//if the form is update form
if (Xrm.Page.ui.getFormType()==2)
    // variable to store the name of the form
    var lblForm;

    // get the value picklist field
    var relType = Xrm.Page.getAttribute("customertypecode").getValue();

    // switch statement to assign the form to the picklist value
    //change the switch statement based on the forms numbers and picklist values
    switch (relType) {
        case 1:
            lblForm = "Information1";
            break;
        case 2:
            lblForm = "Information2";
            break;
        default:
            lblForm = "Information";
    }
    //check if the current form is form need to be displayed based on the value
    if (Xrm.Page.ui.formSelector.getCurrentItem().getLabel() != lblForm) {
        var items = Xrm.Page.ui.formSelector.items.get();
        for (var i in items) {
            var item = items[i];
            var itemId = item.getId();
            var itemLabel = item.getLabel()

            if (itemLabel == lblForm) {
                //navigate to the form
                item.navigate();
            } //endif
        } //end for
    } //endif
 }//endif
} //end function

The code is checking if the form is an  “Update” form and opens up the form based on the value of customertypecode field. The code is reloading the form only if the current form is different than the form the system should be displaying.
Call this function on form load event.
Happy programming…