//  1.) helper code to read an files content

//Your file with the numbers, each at an own line:
NumbFile = "c:\\temp\\numbers.txt";

//============================================
fso     = new ActiveXObject("Scripting.FileSystemObject");
oFile   = fso.OpenTextFile(NumbFile, 1, false, 0);
content = oFile.ReadAll();
oFile.Close();
fso = null; 
//alert(content);
//============================================



//  2.) the needed code itself
//For Each Line In Lines Do:

LinesArray = content.split("\n");
for (LineNumb = 0; LineNumb < LinesArray.length; LineNumb++){
	
	//do here what you want...
	bAnswer = confirm( LinesArray[LineNumb] );
	if (bAnswer == false){break;}

}