function getUrlParams() {
var paramMap = {};
if (location.search.length == 0) {
return paramMap;
}
var parts = location.search.substring(1).split("&");
for (var i = 0; i < parts.length; i ++) {
var component = parts[i].split("=");
paramMap [decodeURIComponent(component[0])] = decodeURIComponent(component[1]);
}
return paramMap;
}
var params = getUrlParams();
if (params["source"] == undefined) {
document.getElementById("source").value = " ";
} else {
document.getElementById("source").value = params["source"];
}
