URGENT: Help with php&Java

I have a problem. I want to get an info popup when I click on the info button of a product. This product list is made with php. How can i send data with java to open a window with a variable?

my codes that i use are:

<SCRIPT Language=’JavaScript’>
function winopen()
{
msg=open(“”,”NewWindow”,”toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=yes,width=400,height=400″);

msg.location = “info.php”
}
</SCRIPT>

<img src=”<? echo($img_lay);?>inf.gif” border=’0′ onClick=”winopen(); return true;”></TD>

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