This is the inspect element.
<script language="javascript">
<input type="submit" onclick="return processPIData(this);hideThisButton()" value=" Next "> <input type="reset" value="Reset ">
And my script is :
JavascriptExecutor jsExecutor = (JavascriptExecutor)driver;
jsExecutor.executeScript("document.getElementByTagName('input')[0].click()");
but this was not working.