linking one page to another with a phrase

<a href="faqs.html?showData=5&letter=B" target="_blank">

function checkIfAny()
{
  qs(); 
  showData(whichPage);
  window.location.hash = whichLetter;  
}

function qs() 
{
    var query = window.location.search.substring(1);
    var parms = query.split('&');
    for (var i=0; i<parms.length; i++) 
    {
        var pos = parms[i].indexOf('=');
        if(i==0)
        {
            whichPage=parms[i].substring(pos+1);
        }
        else if(i==1)
        {
            whichLetter=parms[i].substring(pos+1);
        }
    }
    return "";
}
var whichPage;
var whichLetter;