Create a Mailto-Link for HTMLJavascript widget without opneing a new browser tab

Hi there,

i want to show on my form a HTMLJavascriptwidget to open the (win)mail-client directly. With this code the Browser shows a new-tab-warning an opens a new empty browsertab:

<a href="" target="" extlink="true">Testmail</a><br><br>

I tried without the "target"-tag, but SBM redirects me every time to the warning and new empty tab. In the background my mailclient opens and do the correct things.....

<a href="">Testmail</a><br><br>

What else can I do? Try on Javascript?

Thanks for your help.