function clearEmail(txtEmail){
    if ( txtEmail.value == 'Enter a valid Email' ){
        txtEmail.value = '';
    }
}
function setEmail(txtEmail){
    if (txtEmail.value == ''){
        txtEmail.value = 'Enter a valid Email';
    }
}

function setSearch(txtSearch){
    if(txtSearch.value == ''){
        txtSearch.value = 'Enter search keyword here';
    }
}
function clearSearch(txtSearch){
    if(txtSearch.value == 'Enter search keyword here'){
        txtSearch.value = '';
    }
}