function displayCategorie(categoriename){
	
	if(document.getElementById(categoriename).style.display=='none'){
		document.getElementById(categoriename).style.display='block';
	}
	else {
		document.getElementById(categoriename).style.display='none';
	}

}

function doPic(imgName) {

imgOn = ("" + imgName);
document.mainpic.src = imgOn;
}