function active_div(obj) {
    document.getElementById("tab1").className = "tab1";
    document.getElementById("tab2").className = "tab2";
    document.getElementById("tab3").className = "tab3";
    document.getElementById("tab4").className = "tab4";
    document.getElementById("tab5").className = "tab5";

    obj.className = obj.id + "_active_hover";
}

function changeOver(obj) {

    if (obj.className.indexOf("active") < 0) {
        obj.className = obj.id + '_hover';
    } else {
        obj.className = obj.id + '_active_hover';
    }

}

function changeOut(obj) {

    if (obj.className.indexOf("active") < 0) {
        obj.className = obj.id;
    } else {
        obj.className = obj.id + '_active';
    }

}

function changeDown(obj) {

    obj.className = obj.id + '_active';

}	 

function GetTS() {
	var d=new Date();
	return Number(d.getTime()); 
}