function random_bg() {
var k ;
k = Math.round(Math.random())+1;
document.body.className="home_" +k;
}

function section(k) {

for (i=1; i<50; i++)
        {
        if (i==k)
                {
                eval('document.getElementById(\'text'+i+'\').style.display=\'block\'');
                eval('document.getElementById(\'link'+i+'\').className=\'cur\'');
	            }
        else 
                {
                if(document.getElementById('text'+i) != null){
					 eval('document.getElementById(\'text'+i+'\').style.display=\'none\'');
					 eval('document.getElementById(\'link'+i+'\').className=\'\'');
				}
                }
        }
}