delphi webbrowser onchage MM_jumpmenu pdf file

[Robben1970]

Hi all,
with delphi using a webbrowser representing a webpage, i should have to select
iteratively items in select statements.
There are 2 select statements connected each other

the first is:

.select NAME="N_IDxx" .... onChange="MM_jumpMenu('parent',this,0)"
.option value="/?select1_1
.........

the second changing by the selection of the first select statement is something
like:

.SELECT style="......" onChange="MM_jumpMenu('parent',this,0)">
.option value="#" selected>select2_1
.option value="nu.php?ID=number0&B=number1">select2_2
.........

so both using same function MM_jumpMenu declared as :

function MM_jumpMenu(targ,selObj,restore){ //v3.0
eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
if (restore) selObj.selectedIndex=0;
}

i need to select the item in the first select statement and firing onchange
function to let it producing the new page.
1) how to do it?

then after finished the new page production i need to to select the item in the
second select statement and firing onchange function to let it generating a new
pdf file
2) how to do it?
3) how to get the file and save it?

thanks in advance for your sure help
Roberto