function getParam(paramName,pos){var startPos=(pos)?pos:0;var url,paramBegin,paramEnd,valueBegin,paramValue;url=window.location.search;paramBegin=url.indexOf(paramName,startPos);if(paramBegin==-1){return false}paramEnd=paramBegin+paramName.length;param=url.substring(paramBegin,paramEnd);var valBegin=url.indexOf("=",paramEnd);var nextParam=url.indexOf("&",paramEnd);var valLen=(nextParam==-1)?(url.length-(valBegin)):(nextParam-valBegin);var valEnd=(nextParam==-1)?valBegin+valLen:nextParam;valueBegin=paramEnd+1;paramValue=url.substring(valueBegin,valEnd);if((nextParam!=-1)&&(valBegin>nextParam)){return getParam(param,paramEnd)}else{for(i=0;i<paramValue.length;i++){paramValue=paramValue.replace("+"," ");paramValue=paramValue.replace("%20"," ");paramValue=paramValue.replace("%26","&");paramValue=paramValue.replace("%27","'");paramValue=paramValue.replace("%28","(");paramValue=paramValue.replace("%29",")")}return paramValue}};