I have this try and catch problem. I am trying to redirect to a different page. But sometimes it does and some times it doesnt. I think the problem is in try and catch . can someone help me understand this. Thanks

var pg = new Object();
var da = document.all;
var wo = window.opener;

pg.changeHideReasonID = function(){
    if(pg.hideReasonID.value == 0 && pg.hideReasonID.selectedIndex > 0){
        pg.otherReason.style.backgroundColor = "ffffff";
        pg.otherReason.disabled = 0;
        pg.otherReason.focus();
    } else {
        pg.otherReason.style.backgroundColor = "f5f5f5";
        pg.otherReason.disabled = 1;
    }
}

pg.exit = function(pid){

    try {
        if(window.opener.hideRecordReload){
            window.opener.hideRecordReload(pg.recordID, pg.recordTypeID);

        } else {
            window.opener.pg.hideRecord(pg.recordID, pg.recordTypeID);

        }
    } catch(e) {}
    try {
        window.opener.pg.hideEncounter(pg.recordID);

    } catch(e) {}
    try {
        window.opener.pg.hideRecordResponse(pg.hideReasonID.value == 0 ? pg.otherReason.value : pg.hideReasonID.options[pg.hideReasonID.selectedIndex].text);

    } catch(e) {}
    try {
        window.opener.pg.hideRecord_Response(pg.recordID, pg.recordTypeID);

    } catch(e) {}
    try {
        window.opener.pg.hideRecord_Response(pg.recordID, pg.recordTypeID);

    } catch(e) {}
    try {
        window.opener.window.parent.frames[1].pg.loadQualityMeasureRequest();

    } catch(e) {}
    try {
        window.opener.pg.closeWindow();

    } catch(e) {}   



      parent.loadCenter2({reportName:'redirectedpage',patientID:pid});          
    parent.$.fancybox.close();

}

pg.hideRecord = function(){
         var pid = this.pid;

    pg.otherReason.value = pg.otherReason.value.trim();
    if(pg.hideReasonID.selectedIndex == 0){
        alert("You have not indicated your reason for hiding this record.");
        pg.hideReasonID.focus();
    } else if(pg.hideReasonID.value == 0 && pg.hideReasonID.selectedIndex > 0 && pg.otherReason.value.length < 2){
        alert("You have indicated that you wish to enter a reason\nnot on the list, but you have not entered a reason.");
        pg.otherReason.focus();
    } else {
        pg.workin(1);
        var n = new Object();
        n.noheaders = 1;
        n.recordID = pg.recordID;
        n.recordType = pg.recordType;
        n.recordTypeID = pg.recordTypeID;
        n.encounterID = request.encounterID;
        n.hideReasonID = pg.hideReasonID.value;
        n.hideReason = pg.hideReasonID.value == 0 ? pg.otherReason.value : pg.hideReasonID.options[pg.hideReasonID.selectedIndex].text;

        Connect.Ajax.Post("/emr/hideRecord/act_hideRecord.php", n, pg.exit(pid));


    }
}

pg.init = function(){
    pg.blocker = da.blocker;
    pg.hourglass = da.hourglass;

    pg.content = da.pageContent;

    pg.recordType = da.recordType.value;
    pg.recordID = parseInt(da.recordID.value);
    pg.recordTypeID = parseInt(da.recordTypeID.value);

    pg.information = da.information;

    pg.hideReasonID = da.hideReasonID;
    pg.hideReasonID.onchange = pg.changeHideReasonID;
    pg.hideReasonID.tabIndex = 1;

    pg.otherReason = da.otherReason;
    pg.otherReason.tabIndex = 2;
    pg.otherReason.onblur = function(){
        this.value = this.value.trim();
    }
    pg.otherReason.onfocus = function(){
        this.select();
    }

    pg.btnCancel = da.btnCancel;
    pg.btnCancel.tabIndex = 4;
    pg.btnCancel.title = "Close this window";
    pg.btnCancel.onclick = function(){
        //window.close();
        parent.$.fancybox.close(); 
    }

    pg.btnHide = da.btnHide;
    pg.btnHide.tabIndex = 3;
    pg.btnHide.onclick = pg.hideRecord;
    pg.btnHide.title = "Hide " + pg.recordType.toLowerCase() + " record";

    document.body.onselectstart = function(){
        if(event.srcElement.tagName.search(/INPUT|TEXT/i)){
            return false;
        }
    }

    pg.workin(0);
}

pg.workin = function(){
    var n = arguments.length ? arguments[0] : 1;
    pg.content.disabled = pg.hideReasonID.disabled = n;
    pg.blocker.style.display = pg.hourglass.style.display = n ? "block" : "none";
    if(n){
        pg.otherReason.disabled = 1;
        pg.otherReason.style.backgroundColor = "f5f5f5";
    } else {
        pg.otherReason.disabled = !(pg.hideReasonID.value == 0 && pg.hideReasonID.selectedIndex > 0);
        pg.otherReason.style.backgroundColor = pg.otherReason.disabled ? "f5f5f5" : "ffffff";
        pg.hideReasonID.focus();
    }
}