php send variable to javascript

[moniphp]

I have a problem trying to send a variable (called var) to a javascript function.
The function is:
function probando(var)
{
if(document.form2.cboTipo.value=='0')
{ alert("Por favor, seleccionar algún valor de tipo");
}
if(document.form2.cboConectA.value=='0')
{ alert("Por favor seleccionar algún valor de Conector A");
}
if(document.form2.cboConectB.value=='0')
{ alert("Por favor seleccionar algún valor de conector B");
}
else
window.location = '/prueba3.php?varia=2&txtDocumento=' + document.forms['form2'].elements['txtDocumento'].value + '&var=' + var
}

I called the function here:
echo" <p align='center'><input type='submit' value='Agregar' name='btnEnvia' onclick='javascript:probando(var)'></td>";

I also tried: javascript:probando(\"$var\") but still doesn´t work.

Any help would be apprecciated.

[dotbob]

call the function like so:

javascript:probando('<?=$var?>');

[moniphp]

Thanks but still doesn´t work.

[dotbob]

Time for a bit of troubleshooting:

Take a look at your HTML source when viewing the page through your browser. Locate the onClick="javascript:probando('data');" line.

if where it says data in the above example, there is a value in the source then there is a problem with your javascript function.

However, if the line resembles this:

onClick="javascript:probando('');"

then there is no data within the php variable: $var

The way to call the function that I posted last is correct. It's likely that it will be one of the above.

Cheers.