Stack overflow error on line 0, internet explorer

Hello all


I have this javascript that is working fine in Firefox, but makes my life misserable on ie. . .

I think the solution would be to use the body onload event handler but I can't access that because that part of the document is generated by a template.  Changing that would change the entire site (1000+ pages) so that is not an option.


Here is the script, including any hacks I tried specifically for internet explorer.


Basically what I want to do is automatically start a function when the body is loaded.  I check if the body is loaded by looking for an element with a specific name, and if it is not there, set a timeout to check again.

      var http=httpObject(),http_busy=false,CREDIT_REMAIN=0,msie;

      function campaign(bid,status,credits,name) {

            this.bid=(typeof(bid)=='undefined'?0:bid);
            this.status=(typeof(status)=='undefined'?'pending':status);
            this.credits=(typeof(credits)=='undefined'?0:credits);
            this.name=(typeof(name)=='undefined'?'':name);
      }

      function httpObject() {

            var out;

            if(navigator.appName=='Microsoft Internet Explorer') {

                  out=new ActiveXObject('Microsoft.XMLHTTP');

            } else {

                  out=new XMLHttpRequest;
            }

            return out;
      }

      function hasAttribute(attribute,obj) {

            var out=false,counter=0;

            if(obj.attributes.length) {

                  for(counter=0; counter<obj.attributes.length; counter++) {

                        if(obj.attributes[counter].name==attribute) {

                              out=true;

                              break;
                        }
                  }
            }

            return out;
      }

      function sendCampaign(obj) {

            var mbID=find_mbID(obj);

      }

      function find_mbID(child) {

            var out=new Array();

            while( (hasAttribute('bid',child)==false) && (child.parentNode)) {

                  child=child.parentNode;
            }

            if(hasAttribute('bid',child)) {

                  out[0]=child.getAttribute('bid');

            }

            if(hasAttribute('cost',child)) {

                  out[1]=child.getAttribute('cost');
            }

            return out;
      }

      function bulkpush_autostart(interval) {

            var test,tmp;

            if( (test=document.getElementById('bulkpush_campaigns'))) {

                  if((tmp=document.getElementsByName('messageText'))) {

                        showCharsleft(tmp[0],160,'charsleft');
                  }

                  bulkpush_start_queue();

            } else {

                  if(navigator.appName=='Microsoft Internet Explorer') {
                        
                        window.setTimeout('bulkpush_autostart()',150);

                  } else {

                        window.setTimeout(bulkpush_autostart,150); //keep on trying. . .

                  }
            }
      }

      function bulkpush_start_queue() {

            if(http_busy==false) {
                  
                  bulkpush_http_request();

            } else {

                  window.setTimeout(bulkpush_start_queue,1000);
            }


      }


      function ajaxAuth() {

            //search the current document for two hidden fields: ekey, and company and return them suitable for url encoding

            var ekey,company,obj,out='';

            if( (obj=document.getElementsByName('ekey')) && (obj.length)) {

                  ekey=obj[0].value;
            }

            if( (obj=document.getElementsByName('company')) && (obj.length)) {

                  company=obj[0].value;
            }

            if(ekey && company) {
      
                  out='&ekey='+ekey+'&company='+escape(company);
            }

            return out;
      }

      function bulkpush_http_request() {

            var request;

            if(http_busy==false) {

                  http_busy=true;

                  http.open('get','/rpc.php?rpc[]=Bulkpush_Campaigns&module=27&rpc[]=Bulkpush_Credits'+ajaxAuth(),true);

                  http.onreadystatechange=function() {

                        if(typeof(http)=='undefined') {

                              return;
                        }

                        var sError,sCredit,credits,campaigns=new Array(),name,status,bid,credits,counter,theCredit;

                        if( (http) && (http.readyState==4) && (http.responseXML)) {

                              if((sError=http.responseXML.getElementsByTagName('error')) && (sError.length)) {

                                    alert('An error occurred.\n\n'+sError[0].childNodes[0].data);

                              } else {

                                    if((sCredits=http.responseXML.getElementsByTagName('campaign')) && (sCredits.length)) {

                                          for(counter=0; counter<sCredits.length; counter++) {

                                                bid=(hasAttribute('bid',sCredits[counter])?sCredits[counter].getAttribute('bid'):0);
                                                status=(hasAttribute('status',sCredits[counter])?sCredits[counter].getAttribute('status'):'');
                                                credits=(hasAttribute('credits',sCredits[counter])?sCredits[counter].getAttribute('credits'):0);
                                                name=(hasAttribute('name',sCredits[counter])?sCredits[counter].getAttribute('name'):'');

                                                campaigns[campaigns.length]=new campaign(bid,status,credits,name);
                                          }
                                    }

                                    if((sCredits=http.responseXML.getElementsByTagName('credits')) && (sCredits.length)) {

                                          if(hasAttribute('value',sCredits[0])) {

                                                theCredit=sCredits[0].getAttribute('value');
                                          }
                                    }

                                    updateCanvas(campaigns,theCredit);
                              }

                              http_busy=false;

                              bulkpush_start_queue();
                        }
                  }

                  http.send(null);
            }
      }

      function updateCanvas(cData,credit) {
            CREDIT_REMAIN=credit;

            var obj,tCredit,txtCredit,tData;

            if((obj=document.getElementById('creditsleft'))) {

                  clearChildren(obj);

                  tCredit=document.createTextNode(credit);
                  txtCredit=document.createTextNode(' Credit'+(credit==1?'':'s'));

                  if(credit==0) {

                        span=document.createElement('span');
                        span.style.fontWeight='bold';
                        span.style.color='red';

                        span.appendChild(tCredit);

                        obj.appendChild(span);
                        obj.appendChild(txtCredit);

                  } else {
                        obj.appendChild(tCredit);
                        obj.appendChild(txtCredit);
                  }

            }

            if(obj=document.getElementById('bulkpush_campaigns')) {

                  var obj2=obj.getElementsByTagName('tbody');

                  if(obj2 && obj2.length) {

                        obj2=obj2[0];

                        rows=obj2.getElementsByTagName('tr');
                  }
            }

            for(var counter=0; counter<cData.length; counter++) {

                  for(rowcounter=0; rowcounter<rows.length; rowcounter++) {

                        if(rows[rowcounter].lastChild.getAttribute('bid')==cData[counter].bid) {

                              updateRow(rows[rowcounter],cData[counter]);

                        } else {

                              insertRow(obj2,cData[counter]);
                        }
                  }
            }

            bulkpush_start_queue();
      }

      function updateRow(tr,rowData) {

            tr.lastChild.setAttribute('cost',rowData.credits);

            if(rowData.status=='sent') {

                  tr.firstChild.nextSibling.removeChild(tr.firstChild.nextSibling.firstChild);
                  tr.firstChild.nextSibling.appendChild(document.createTextNode('sent'));
                  tr.firstChild.nextSibling.className='status sent';
                  tr.className='strike';
                  tr.lastChild.style.textDecoration='none';

                  removeLastLink(tr.lastChild);

                  /*try {
                        tr.lastChild.removeChild(tr.lastChild.getElementsByTagName('a').lastChild);
                  }
                  catch(e) {
                        ;
                  }*/
            }
      }

      function removeLastLink(td) {

            var obj,counter;

            if( (obj=td.getElementsByTagName('a')) && (obj.length)) {

                  for(counter=0; counter<obj.length; counter++) {

                        if(obj[counter].className=='sender') {

                              td.removeChild(obj[counter]);

                              break;
                        }
                  }
            }
      }

      function insertRow(tbody,rowData) {


      }

      function sendLink(targetObject) {

            var a,img;

            a=document.createElement('a');
            a.href="javascript:alert('oops')";
            a.onclick=function() {
                  return sendCampaign(this);
            }
            a.title="Send now";
            a.className="sender";

            img=document.createElement('img');
            img.src="/images/send.gif";
            img.setAttribute('border',0);
            img.alt="Send Bulk Push";

            a.appendChild(img);
            targetObject.appendChild(a);

      }

      function editLink(targetObject,bid) {

            var a,img;

            a=document.createElement('a');
            a.href="/client/index.php?module=27&amp;bid="+bid+"&amp;baction=edit&amp;page=1";
            a.title="Edit";

            img=document.createElement('img');
            img.src="/images/edit.png";
            img.border="0";
            img.alt="Edit";

            a.appendChild(img);
            targetObject.appendChild(a);

      }

      function deleteLink(targetObject,bid) {

            var a,img;

            a=document.createElement('a');
            a.href="/client/index.php?module=27&amp;bid="+bid+"&amp;baction=delete&amp;page=3";
            a.title="Edit";

            img=document.createElement('img');
            img.src="/images/edit.png";
            img.border="0";
            img.alt="Edit";

            a.appendChild(img);
            targetObject.appendChild(a);
      }

      function clearChildren(pObj) {
            var removeme;

            while((removeme=pObj.firstChild)) {

                  pObj.removeChild(removeme);
            }
      }

      function getModule() {

            var tmp=location.search,out;

            tmp=tmp.match(/module=(\d*)/);

            if(tmp.length) {

                  out=parseInt(tmp[1]);
            }

            return out;
      }

      function sendCampaign(thisObj) {

            var cData=find_mbID(thisObj),obj,tmp;

            if(CREDIT_REMAIN==0) {

                  //try to load remaining credits from div

                  if( (obj=document.getElementById('creditsleft'))) {

                        tmp=obj.childNodes[0].data;

                        tmp=tmp.match(/\d*/);

                        if(tmp.length>1) {

                              CREDIT_REMAIN=tmp[1];
                        }
                  }
            }
            if(cData[0]) {

                  if(CREDIT_REMAIN < parseInt(cData[1])) {

                        alert('Sorry, but you do not have enough credits to send this campaign.\n\n'+
                                'This campaign requires '+cData[1]+' credit'+(cData[1]==1?'':'s')+' and only '+
                                CREDIT_REMAIN+' credit'+(CREDIT_REMAIN==1?'':'s')+' are available.\n\n\n'+
                                'You can purchase more credits by contacting the sales department at sales@txtnation.com\n\n'+
                                'or by using the shopping cart at the top of the page.');
                  } else {

                        try {
                              window.open('https://secure.txtnation.com/client/modules/bulkpush/sendbulkpush.popup.htm?bid='+cData[0]+
                                                '&module='+getModule()+ajaxAuth(),
                                                'sendbulkpush',
                                                'height=350,width=800,toolbar=no, location=no, status=no, menubar=no, scrollbars=no');
                        }

                        catch(e) {

                              alert('A popup-blocker prevented opening of the Send popup.  Please disable it.');
                        }
                  }
            } else {

                  alert('Could not find data for this campaign. . .');
            }

            return false;
      }

      function showCharsleft(cThis,maxLength,displayObjectName) {

            var obj,remain=0;

            try {
                  remain=maxLength-cThis.value.length;
            } catch(e) {
                  ;
            }

            remain=(remain<0?0:remain);

            if((obj=document.getElementsByName(displayObjectName)) && (obj.length)) {

                  obj[0].value=remain;
            }

      }

      if(navigator.appName=='Microsoft Internet Explorer') {

            var b,tmp;

            if((b=document.getElementsByTagName('body')) && (b.length)) {
                  if( (tmp=document.getElementsByName('messageText')) && (tmp.length)) {

                        showCharsleft(tmp[0],160,'charsleft');
                  }

                  bulkpush_start_queue();
            }
      } else {
            bulkpush_autostart();
      }

NOTE: this code is copyright txtNation