var pageNum = 1;

function showAllPages() {

     for (i=1; i<pages+1; i++)  {

		 document.getElementById('page_num').innerHTML = ''
	
		 for (i=1; i<pages+1; i++) {
		 page_id = 'page' + i;
		 document.getElementById(page_id).style.display = "block";
     
     }
        
     
     }

}


function displayPage(pg_num) {

if (pg_num) {

     pageNum = pg_num;
 
     for (i=1; i<pages+1; i++) {
     page_id = 'page' + i;
     document.getElementById(page_id).style.display = "none";
                         }
                         
     page_id = 'page' + pageNum;
     document.getElementById(page_id).style.display = "block";
    
            }
         
      

}

function nextPage() {

    
     if (pageNum + 1 > pages) pageNum = 1;
     else pageNum += 1;
     displayPage(pageNum);
     
     }

function previousPage() {

    
     if (pageNum - 1 < 1) pageNum = pages;
     else pageNum -= 1;
     displayPage(pageNum);
     
     }

function pageNav() {


pagination = '&lt; <a href="javascript:scroll(0,0)"><span onClick="previousPage()">previous page</span></a> &gt;';

for (i=1; i<pages+1; i++) { 

pagination += ' <a href="javascript:scroll(0,0)"><span onClick="displayPage(' + i + ')">' + i + '</span></a> ';

}

pagination += '&lt; <a href="javascript:scroll(0,0)"><span onClick="nextPage()">next page</span></a> &gt;';


document.getElementById('paging').innerHTML = pagination;

}