Possible update for auto-title-tooltip

auto-title-tooltip.js

var autoTitleTooltip = function(){
    
    var elementType = 'div';
    var customClass = '';
    
    domIdFromString = function(myStr){
    myStr+=Math.random();
    myStr=myStr.toLowerCase();
    myStr=myStr.replace(/ /g,"");
    myStr=myStr.replace(/[^a-zA-Z0-9]+/g,"");
    return myStr;
    }
        
    this.undo = function(){
    jQuery('.auto-title').each(function(){
        currentId = jQuery(this).attr('data-title-id');
        if (typeof currentId == 'string'){
        currentId = '#' + currentId;
        jQuery(this).attr('title',jQuery(currentId).text());
        jQuery(currentId).remove();
        jQuery(this).off('mouseover').off('mouseleave');
        }else{
            alert(typeof currentId + jQuery(this).html());
        }    
    });
    }
    
    this.convert = function(targetSelector){
    targetSelector = targetSelector ? targetSelector : 'a';    
    jQuery(targetSelector).each(function(){
        var currentName = "";
        //current title
        var currentTitle = jQuery(this).attr('title'); 
        if (typeof currentTitle == 'string' && currentTitle != ''){
        //unique id built from title
        currentName = domIdFromString(currentTitle);            
        //insert new div below target link
        jQuery(this).after(
            //build new div to insert
            jQuery('<'+elementType+'>')
            .attr('id',currentName) //set dynamic/unique id
            .addClass(customClass) //custom css/class
            .html(currentTitle) //title content
            .css({'display':'none'}) //hide
        ).addClass('auto-title');
        //store dynamic title id
        jQuery(this).attr('data-title-id',currentName);
        //mouse enter
        jQuery(this).mouseover(function(){
            //reference dynamic title id
            var myId = '#'+jQuery(this).attr('data-title-id');
            jQuery(myId).fadeIn('slow');
        });
        //mouse out/leave
        jQuery(this).mouseleave(function(){
            var myId = '#'+jQuery(this).attr('data-title-id');
            jQuery(myId).fadeOut();
        });

        jQuery(this).attr('title',''); //clear regular title
        }

    });
    }
};