if (document.images) {
 var imgPath = "images/"
 	var na1 = new Image; na1.src = imgPath + "n_about_on.gif";
 	var na0 = new Image; na0.src = imgPath + "n_about.gif";
 	var nr1 = new Image; nr1.src = imgPath + "n_request_demo_on.gif";
 	var nr0 = new Image; nr0.src = imgPath + "n_request_demo.gif";
   	var no1 = new Image; no1.src = imgPath + "n_our_work_on.gif";
 	var no0 = new Image; no0.src = imgPath + "n_our_work.gif";
	var np1 = new Image; np1.src = imgPath + "n_post_on.gif";
 	var np0 = new Image; np0.src = imgPath + "n_post.gif";
	var nc1 = new Image; nc1.src = imgPath + "n_contact_on.gif";
 	var nc0 = new Image; nc0.src = imgPath + "n_contact.gif";
}

//**************************************************************//

function doRollover(imgName, onOff) {
	if (document.images) {
	var targetObj = eval(imgName+onOff);
		if (document.images[imgName] != null && targetObj != null) {
		document.images[imgName].src = targetObj.src;
		}
	}
}