var search_box_default_color;
var search_box_default_str = '';

function clear_search_box() {
    var search_box = document.getElementById( 'search_box' );
    if ( search_box.style.color == search_box_default_color || search_box_default_str == '' ) {
    search_box_default_str = search_box.value;
	search_box.value = "";
	search_box_default_color = search_box.style.color;
	search_box.style.color = "#000000";
    }

}
function set_search_box() {
    var search_box = document.getElementById( 'search_box' );
    if ( search_box.value=="" ) {
	search_box.value = search_box_default_str;
	search_box.style.color = search_box_default_color;
    }
}


function switchTab(id,n) {
	document.getElementById(id).className = "selectTab" + n;
}