how to change image size in HTML

Hi there,

      I am tring to change image size retrieved from internet, which is displayed in a blank cell , my HTML is as follows:

="<a
href=\"../../opendoc/openDocument.jsp?iDocID=olWSm_EAAMkZGwUASgyFpxegGDU&sIDType=CUID&sType=wid&sReportName=Report
4&sRefresh=N\" title=\"\" target=\"_blank\"
nav=\"doc\"><img src=\https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcRporK4UiTbFrJvEIcjIg-bKPdo-2OI2JIhCo85vCXM762ejF6J2Q\
height=10width=10></a>"

    above sytax is correct to display image in blank cell, but its size can't be adjusted by 'height=10width=10 '. could you please help how to do this size change of the image?  I have checked the forum, but can't find answere anywhere.