function ShowSection(SectionName){
 if (document.getElementById(SectionName) != null){
 	var El = document.getElementById(SectionName);
	if (El.style.display != 'block'){
		El.style.display = 'block';
	}
	else{
		El.style.display = 'none';
	}
 }
}

var TheStyles = new Array('First', 'Second', 'Third', 'Fourth', 'Fifth', 'Sixth', 'Seventh');
var WhichStyle = TheStyles[Math.floor(TheStyles.length*Math.random())];
setActiveStyleSheet(WhichStyle);

function setActiveStyleSheet(title) {
   var i, a, main;
   for(i=0; (a = document.getElementsByTagName('link')[i]); i++) {
     if(a.getAttribute('rel').indexOf('style') != -1
        && a.getAttribute('title')) {
       a.disabled = true;
       if(a.getAttribute('title') == title) a.disabled = false;
     }
   }
}