function mouseOver(obj){
if(obj==news){
document.news.src ="images/header2_03.png";
}
else if(obj==info){
document.info.src="images/header2_04.png";
}
else if(obj==art){
document.art.src="images/header2_05.png";
}
else if(obj==links){
document.links.src="images/header2_06.png";
}
else if(obj==demo){
document.demo.src="images/header2_07.png";
}

}

function mouseOut(obj){
if(obj==news){
document.news.src ="images/header_03.png";
}
else if(obj==info){
document.info.src="images/header_04.png";
}
else if(obj==art){
document.art.src="images/header_05.png";
}
else if(obj==links){
document.links.src="images/header_06.png";
}
else if(obj==demo){
document.demo.src="images/header_07.png";
}
}

function mouseClick(obj){
if(obj==news){
document.news.src ="images/header3_03.png";
loadNewPage('text/news.html');
}
else if(obj==info){
document.info.src="images/header3_04.png";
loadNewPage('text/info.html');
}
else if(obj==art){
document.art.src="images/header3_05.png";
loadNewPage('text/art.html');
}
else if(obj==links){
document.links.src="images/header3_06.png";
loadNewPage('text/links.html');
}
else if(obj==demo){
document.demo.src="images/header3_07.png";
loadNewPage('text/demo.html');
}
}

function loadNewPage(temp) {
var req = new XMLHttpRequest();
req.open("GET", temp, false);
req.send(null);
var page = req.responseText;
document.getElementById('main').innerHTML = page;
}