plz help me verify this... calling function

[melvinoyh]

<jsp:useBean id = "pc" class="common.claim" scope="request" /> <script language="javascript">function chkQty(x) { if(eval("document.breakdown.b_progQty"+x+".value") == '') { alert("The progress to date quantity do not have value."); eval("document.breakdown.b_progQty"+x).focus(); } else if(eval("document.breakdown.b_progQty"+x+".value") < qty) { alert("The entered value for progress to date quantity is less then previous value."); eval("document.breakdown.b_progQty"+x).value = qty; eval("document.breakdown.b_progQty"+x).focus(); } else calcQtyPect(x); } function calcQtyPect(p) { <% qty = request.getParameter("b_progQty"+p); laqty = request.getParameter("b_laQty"+p); calPect = pc.calcQtyPect(qty,laqty); %> eval("document.breakdown.b_progPect"+p).value = calPect; } </script> <input type="text" size=8 name="b_progQty<%=c%>" id="progLump" value='<%=b_progQty.elementAt(c)%>' style="text-align:right;background:#ffffcc" onChange="chkQty(<%=c%>);">

plz help me to verify the above coding whether correct or not.
thx.