script truncates

var eTable = document.getElementById(this._eDiv.id + "_tbl");

addEventListenerEx(window, "load", function() {     
        var aCells = eTable.getElementsByTagName("DIV");
        window.alert(aCells.length);   
            //When aCells is length of 100, we're ok...but when it's big (like 3,000) I have problems         
        for (var i = 0; i < aCells.length; i++){
            Grid.clipText(aCells[i]);
        }
}, false);

Grid.clipText = function (oDiv) {   

    //for tooltip       
    var oCurDiv;
    var oTagA;
    var sToolTip;       
    if (oDiv.firstChild) {
            if (oDiv.firstChild.firstChild){            
                oCurDiv = oDiv.firstChild;
                while (oCurDiv) {
                    if (is.ie) {
                        oTagA = oCurDiv;                        
                    } else {
                        // there are some different between IE & FireFox.
                        oTagA = oCurDiv.firstChild.parentNode;                      
                    }
                    if (oTagA.tagName == "A") {
                        sToolTip = oTagA.innerHTML;     
                        if (sToolTip.indexOf('<b>') > 0) {
                            sToolTip = sToolTip.replace('<b>',"");
                            sToolTip = sToolTip.replace('</b>',"");
                        }
                        if (sToolTip.indexOf('<B>') > 0) {
                            sToolTip = sToolTip.replace('<B>',"");
                            sToolTip = sToolTip.replace('</B>',"");
                        }                       
                        oTagA.parentNode.title = convertHTMLToText(sToolTip);
                    }
                    oCurDiv = oCurDiv.nextSibling;                                      
                }
            } else {
                oDiv.title = convertHTMLToText(oDiv.innerHTML);
            }
        }
        if (!is.ie) {
                    var oText = oDiv;           
                    while (oText.nodeType != 3) {
                        oText = oText.firstChild;
                    }

                    var sDisplayText = oText.nodeValue;
                    if (sDisplayText.length < 3) return; 

                    var lastThree;
                    sDisplayText = sDisplayText.slice(0, parseInt(oDiv.offsetWidth / 5));
                    oText.nodeValue = sDisplayText + "...";
                    while (oDiv.scrollWidth > oDiv.offsetWidth && sDisplayText != "") {
                        lastThree = sDisplayText.slice(-3);
                        sDisplayText = sDisplayText.slice(0, sDisplayText.length - 3);
                        oText.nodeValue = sDisplayText + "...";
                    }
                    oText.nodeValue = sDisplayText + lastThree.slice(0, 1) + "...";
                    while (oDiv.scrollWidth > oDiv.offsetWidth && sDisplayText != "") {
                        oText.nodeValue = sDisplayText + "...";
                    }
                }