inputTagsArray = document.getElementsByTagName("input");

for (i = 0; i < inputTagsArray.length; i++) 
{
	if (inputTagsArray[i].className == "button" && inputTagsArray[i].src.indexOf("images/M_images/searchButton.gif") > 0)
	{
		inputTagsArray[i].src = inputTagsArray[i].src.replace("images/M_images/searchButton.gif", "images/M_images/searchButton.png");
	}
}