function getWindowWidth(){
    if (parseInt(navigator.appVersion)>3) {
        if (navigator.appName=="Netscape") {
            width = window.innerWidth-16;
        }
        if (navigator.appName.indexOf("Microsoft")!=-1) {
            width = document.body.offsetWidth-20;
        }
    }
    return width;
}
function checkSearchForm(){
    site = document.getElementById("site");
    web = document.getElementById("web");
    if(site.checked){
        if(document.getElementById("searchquery").value!=""){
            document.searchform.submit();
        }else{
            alert("Please type search query to perform search!");
        }
    }else{
        window.open("http://google.com/search?q="+document.getElementById("searchquery").value);
        document.getElementById("searchquery").value="";
    }
}