websitepanel/WebsitePanel.WHMCSModule/modules/servers/websitepanel/clientarea.tpl

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<form action="{$websitepanel_url}/default.aspx?pid=Login" method="POST" target="_blank"><input type="hidden" value="{$username}" name="user"><input type="hidden" value="{$password}" name="password"><input type="submit" value="{$LANG.websitepanel_clientarea_oneclicklogin}"></form>
	`<br />`
	`<form action="{$websitepanel_url}/default.aspx?pid=Login" method="POST" target="_blank"><input type="hidden" value="{$username}" name="user"><input type="hidden" value="{$password}" name="password"><input type="submit" value="{$LANG.websitepanel_clientarea_oneclicklogin}"></form>`