obr1=new Array('img/menu_over.gif','over');
obr2=new Array('img/menu_out.gif','out');
nazev=new Array(obr1,obr2);

function cache(cesta)
{
for (i=0;i<nazev.length;i++)
{
eval(nazev[i][1]+'=new Image();');
eval(nazev[i][1]+'.src="'+cesta+nazev[i][0]+'";');
}
}

function pres(obj,e,barva)
{
obj.style.backgroundImage="url("+eval(e+'.src')+")";
obj.firstChild.style.color=barva;
}

function vedle_odkaz(obj)
{
location.href=obj.firstChild.href;
}