var doit = true
function showm(ob,pict, p) {
    document.getElementById(ob).style.visibility = 'visible'
    document.getElementById(pict).src = 'images/' + p + '_over.jpg'
	
    }
function shutm(pict, p){
    
    document.getElementById(pict).src = 'images/' + p + '.jpg'
    
}
function inchide(ob,pict,p)
    {
    
    document.getElementById(ob).style.visibility = 'hidden'
	document.getElementById(pict).src = 'images/' + p + '.jpg'
    
}