Change links for multiple InDesign files

See here:
Path change

Try this

var cur_doc=app.activeDocument;

var myf=Folder.selectDialog("Choose folder for Art File");

all_val=diaVal()

inVal=all_val[0];

outVal=all_val[1];;

var indFils=myf.getFiles("*.indd");

linkProc(cur_doc)

function linkProc(cur_doc)

{

    for (no_link=0;no_link<cur_doc.links.length;no_link++)

    {

        if (cur_doc.links[no_link].name.match(inVal))

        {

            var folPath=cur_doc.links[no_link].name;  

            folPath=folPath.replace(inVal,outVal);

            cur_doc.links[no_link].relink(File(myf+"/"+folPath));

        }

    }

}

function diaVal()

{   

    var myWindow = new Window ("dialog", "Form");

    var myInputGroup = myWindow.add ("group");

    myInputGroup.add ("statictext", undefined, "Find text");

    var myText = myInputGroup.add ("edittext", undefined);

    myText.characters = 10;   

    myText.active = true;

    var myOutputGroup = myWindow.add ("group");

    myOutputGroup.add ("statictext", undefined, "Replace text");

    var myText1 = myOutputGroup.add ("edittext", undefined);

    myText1.characters = 10;

    var myButtonGroup = myWindow.add ("group");

    myButtonGroup.alignment = "right";

    myButtonGroup.add ("button", undefined, "OK");

    myButtonGroup.add ("button", undefined, "Cancel");

    if (myWindow.show ()==1)

    {

    var inputVal =myText.text;

        var outputVal =myText1.text;

        return [inputVal,outputVal];

    }

    else

    {

        exit(0);

    }

}