//Universal function to get parameter from url string
function getParameter(aP){var qS = new String(location.search.substring(1,location.search.length));var p = qS.split("&");var val = "";if(aP){for(i=0;i<p.length;i++){if(p[i].split( "=" )[0] == aP){val = p[i].split( "=" )[1];}}return val;}}