function onmousedowmUsername()
{    
    var myUsername  = document.getElementById("txt_UserName");
    if (myUsername.value == "Username")
    {
        myUsername.value="";
    }    
};
function ommouseoutUsername()
{ 
    var myUsername  = document.getElementById("txt_UserName");
    if (myUsername.value == "")
    {
        myUsername.value = "Username";    
    }    
};
function onmousedowmPassword()
{    
    var myPassword  = document.getElementById("txt_Password");
    if (myPassword.value == "Password")
    {
        myPassword.value="";
    }    
};
function ommouseoutPassword()
{ 
    var myPassword  = document.getElementById("txt_Password");
    if (myPassword.value == "")
    {
        myPassword.value = "Password";    
    }    
};
function onmousedownSearchBox()
{
    var mySearchTerm = document.getElementById("txt_SearchTerm");
    if (mySearchTerm.value == "Search")
    {
        mySearchTerm.value = "";
    }
};
function onmouseoutSearch()
{
    var mySearchTerm = document.getElementById("txt_SearchTerm");
    if (mySearchTerm.value == "")
    {
        mySearchTerm.value = "Search";
    }
}