Web crawler class not working

Recently, I began working on constructing a simple web crawler. My initial code that just iterated twice worked perfectly, but when I attempted to turn it into a class with error exception handling, it no longer compiled.

import re, urllib
class WebCrawler:
    """A Simple Web Crawler That Is Readily Extensible"""
    def __init__():
        size = 1
    def containsAny(seq, aset):
        for c in seq:
            if c in aset: return True
        return False

    def crawlUrls(url, depth):
        textfile = file('UrlMap.txt', 'wt')
        urlList = [url]
        size = 1
        for i in range(depth):
            for ee in range(size):
                if containsAny(urlList[ee], "http://"):
                    try:
                        webpage = urllib.urlopen(urlList[ee]).read()
                        break
                    except:
                        print "Following URL failed!"
                        print urlList[ee]
                    for ee in re.findall('''href=["'](.[^"']+)["']''',webpage, re.I):
                        print ee
                        urlList.append(ee)
                        size+=1
                        textfile.write(ee+'\n')

myCrawler = WebCrawler

myCrawler.crawlUrls("http://ift.tt/1Likcor", 2)

And here is the error code generated.

Traceback (most recent call last):
  File "C:/Users/Noah Huber-Feely/Desktop/Python/WebCrawlerClass", line 33, in <module>
    myCrawler.crawlUrls("http://ift.tt/1Likcor", 2)
TypeError: unbound method crawlUrls() must be called with WebCrawler instance as first argument (got str instance instead)