function chkPopUp(){
	var mine = window.open('','','width=1,height=1,left=0,top=0,scrollbars=no');
         if(mine){
                mine.close();
                //return false;
         }else{
                alert("A popup blocker has been detected on your system. We recommend that you disable this popup blocker, as it may cause problems with the viewing  of the website.");
                //return true;
        }

}

function showUpload(doc){
  document.getElementById('upload_'+doc).style.display = 'none';
  document.getElementById('uploading_'+doc).style.display = '';
}

function selectPage(doc, page, pages){
  for(i=1;i<=pages;i=i+1){
    document.getElementById(doc+'_page_'+i).style.display = 'none';
    document.getElementById(doc+'_pageicon_'+i).style.backgroundImage = 'url(/images/sheet.png)';
  }
  document.getElementById(doc+'_page_'+page).style.display = '';
  document.getElementById(doc+'_pageicon_'+page).style.backgroundImage = 'url(/images/selsheet.png)';
}

var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));