function show(div, link) {
    divElement = document.getElementById(div);
    divElement.style.display = 'block';  
}

function hide(div, link) {
    divElement = document.getElementById(div);
    divElement.style.display = 'none';
}


function decisionMaker(open, close) {
    show (open);
    hide (close);
}

function checkForm() {
    theValue = document.getElementById("term"); 
    if (theValue.value != '') {
        return true;
    } else {
        alert('Please enter a search term');
        return false;
    }
}

function clearField(divName) {
    var theDiv = document.getElementById(divName);
    theDiv.value = '';
}

function restoreField(divName, restoreText) {
    var theDiv = document.getElementById(divName);
    if (theDiv.value == '') {
        theDiv.value = restoreText;
    }
}

function checkForm(form) {
   
    var checkEmailValue = document.getElementById('emailReg').value
    var filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
    
    if (!filter.test(checkEmailValue)) {
        alert('Please Enter a valid Email Address');
        return false;
    } else {
        return true;
    }

    
}