Try this.
Create a text box with id as searchText and implement your own search method.
$('#searchbutton').click(search);
$('#SearchText').keypress(function(e){
var code = (e.keyCode ? e.keyCode : e.which);
if(code == 13) {
search()
}
});
function search(){
var client = document.getElementById('SearchText').value;
var textbox = document.getElementById('SearchText');
var edittext = ", is not available!";
var result = client + edittext;
if (textbox.value == 'Search...') {
alert('Please enter a Client Name to search for ');
textbox.focus();
}
else {
alert(result);
};
}