Push - Pop stack problem

[Ashes2Ashes]

Hi,

I've created a webpage where the user can enter an number/word into an address bar and it would appear somewhere else on the page - I also have back and forward buttons on the page (similar to a browser). But whenever i click the back or forwards button, instead of the last inputted number/word being popped back I get all of the words/numbers that have been inputted during that session. Anyone see where I'm going wrong?

Heres my code for the back button:

		  function Go_Back (){

		          var input2=navigation.url_out.value;

		          url2.push(input2 + '\n');

		          navigation.forward_stack.value=url2;


		          var input1=navigation.back_stack.value;

		          url1.pop();

		          navigation.url_out.value=input1;

		          }

[acoder]

Show the corresponding HTML and the code that adds the inputs.