Preventing The Target="new" Attribute From Working?

I'm using the built-in Dreamweaver code to do a simple jump menu which displays a .pdf file when the user selects one from a list. Here's the entire script code, all 3 lines of it:

Code:

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

Here's a snippet from the select list, with the call to the script:

Code:

<select name="anFlyers" id="anFlyers" onchange="MM_jumpMenu('parent',this,0)">
<option selected>Choose a Flyer</option>

[code]....