function CharacterCounter(field, countfield, maxlimit) 
{
    if (field.value.length > maxlimit) // if too long...trim it!
        field.value = field.value.substring(0, maxlimit);
    // otherwise, update 'characters left' counter
    else 
        countfield.value = maxlimit - field.value.length + ' characters remaining';
}
function loadSearch()
{
var SearchText=document.getElementById("txtSearch").value;
window.location.href="Search.aspx?SearchText=" + SearchText;
}