Selenium - How to find string exists in the browser url or not ??

/**********************************************************      Function Name      : LocationTextPresent      Arguments             : text      Description             : This function checks whether text is present in URL or not.      Author                    : Sara ,Bangalore /*********************************************************/

Selenium.prototype.getLocationTextPresent = function(text) {      var element = this.browserbot.getCurrentWindow().location;              var patternMatcher = new PatternMatcher(text);     if (patternMatcher.strategy == PatternMatcher.strategies.glob) {             if (text.indexOf("glob:")==0) {                     text = text.substring("glob:".length); // strip off "glob:"                 }         patternMatcher.matcher = new PatternMatcher.strategies.globContains(text);     }     else if (patternMatcher.strategy == PatternMatcher.strategies.exact) {                 text = text.substring("exact:".length); // strip off "exact:"         return element.indexOf(text) != -1;     }     return patternMatcher.matches(element); };

<tr>             <td>verifyLocationTextPresent</td>             <td>ruby</td>             <td>true</td> </tr>

Ex:  url : http://sara-testing-quality-assurance-site.blogspot.com/2011/06/useful-functions-helpful-question.html <tr>             <td>verifyLocationTextPresent</td>             <td>sara</td>             <td>true</td> </tr>