function makeArray(i,typ){

        this.length = i;
        for (var x = 0; x < i; x++){
                this[x] = new Image();
                this[x].src = "images/"+imgNames[x]+"_"+typ+".gif";
        }
        return this;
}

if (document.images){
        var imgNames = new Array('tpnv_contact','tpnv_learn');
        var overs = new makeArray(2,'on');
        var offs = new makeArray(2,'off');
}

function over(num,imgName){
        if (document.images){
                document.images[imgName].src = overs[num].src;
        }
}

function out(num,imgName){
        if (document.images){
                document.images[imgName].src = offs[num].src;
        }
}

function doFlash(typ){
	if (document.all){
		
		if (typ=='on' && document.all.flash)
			document.all.flash.style.visibility = 'hidden';
		else if(typ=='off' && document.all.flash){
			document.all.flash.style.visibility = 'visible';
		}
	} else {
		if (typ=='on' && document.flash)
			document.flash.visibility = 'hidden';
		else if(typ=='off' && document.flash){
			document.flash.visibility = 'show';
			
		}
	}
}