//paraName 等找参数的名称
function GetUrlParam(paraName) {
var url = document.location.toString();
var arrObj = url.split(“?”);

if (arrObj.length > 1) {
var arrPara = arrObj[1].split(“&”);
var arr;

for (var i = 0; i < arrPara.length; i++) {
arr = arrPara[i].split(“=”);

if (arr != null && arr[0] == paraName) {
return arr[1];
}
}
return “”;
}
else {
return “”;
}
}