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if(document.getElementById(textBoxId.toString()).value == "")
alert("Please enter value in " + textBoxId.toString());
<form id="form1" runat="server">
<input type="text" id="txtIn" />
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Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.
One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.