if (document.images) {
		
        abouton = new Image();			abouton.src = "images/about_over.gif";  
		intellectualon = new Image();		intellectualon.src = "images/intellectual_over.gif";
		technicalon = new Image();		technicalon.src = "images/technical_over.gif";
		reporton = new Image();		reporton.src = "images/report_over.gif";
		resourceson = new Image();		resourceson.src = "images/resources_over.gif";
		newson = new Image();			newson.src = "images/news_over.gif";
		img1on = new Image();		img1on.src = "images/btn_intellectual_over.gif";  
		img2on = new Image();		img2on.src = "images/btn_technical_over.gif";		
		
		aboutoff = new Image();			aboutoff.src = "images/about.gif";  
		intellectualoff = new Image();		intellectualoff.src = "images/intellectual.gif";
		technicaloff = new Image();		technicaloff.src = "images/technical.gif";
		reportoff = new Image();		reportoff.src = "images/report.gif";
		resourcesoff = new Image();		resourcesoff.src = "images/resources.gif";
		newsoff = new Image();			newsoff.src = "images/news.gif";
        img1off = new Image();		img1off.src = "images/btn_intellectual.gif"; 
		img2off = new Image();		img2off.src = "images/btn_technical.gif";
		
}

function imgOn(imgName) {	
	if (document.images) {
	    document[imgName].src = eval(imgName + "on.src");
	}
}

function imgOff(imgName) {
	if (document.images) {
	    document[imgName].src = eval(imgName + "off.src");
	}
}