The onMouseDown event handles the event when the mouse button is pressed down while the mouse pointer is over the link.
<html> <head> <title> Using the onMouseDown event handler of the Link object</title> </head> <body> Click the mouse button while the cursor is on the link. <form name="form1"> <a href=http://www.navioo.com onMouseDown='alert("The mouse button was pressed DOWN.")'> http://www.navioo.com</a> <br><br> </form> </body> </html>