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="";
    }
}
function submitForm(button,formId){
    var frm = document.getElementById(formId);
    if(frm&&button){
        if(checkForm(frm)){
            button.disabled='true';
            frm.submit();
        }
    }
}
function checkForm(frm){
    if(frm){
        var subj = document.getElementById("subject");
        var text = document.getElementById("mailtext");
        if(subj.value=="" || text.value==""){
            alert("Please fill all fields.");
            return false
        }
    }else return false;
    return true;
}
function submitRegistrationForm(button,formId){
    var frm = document.getElementById(formId);
    if(frm&&button){
        if(checkRegistrationForm(frm)){
            button.disabled='true';
            frm.submit();
        }
    }
}
function checkRegistrationForm(frm){
    if(frm){
        var fname = document.getElementById("firstName");
        var lname = document.getElementById("lastName");
        var email = document.getElementById("email");
        if(fname.value=="" || lname.value=="" || email.value==""){
            alert("Please fill all required fields.");
            return false
        }
    }else return false;
    return true;
}
function switchVisibility(id){
    var el = document.getElementById(id);
    if(el){
        if(el.style.visibility == "visible") el.style.visibility = "hidden";
        else el.style.visibility = "visible";

    }
}
function exportSeminars(){
    showDialog('/servlet/seminarlisting?export=pdf', 300, 300);
}