This function does an alert on what you request… it’s a great little function picked it up from

activsoftware.com

function getQueryVariable(variable) {
var query = window.location.search.substring(1);
var vars = query.split(“&”);
for (var i=0;i<vars.length;i++) {
var pair = vars[i].split(“=”);
if (pair[0] == variable) {
return pair[1];
}
}
alert(‘Query Variable ‘ + variable + ‘ not found’);
}

Call a page, page.html?x=test

alert( getQueryVariable(“x”) );