function LoadTips(){
	//grab a tip
	var tips = getElementsByClass("tip");	

	for(var i = 0; i < tips.length; i++){		
		tips[i].style.display = "none";
	}

	randomnumber=Math.floor(Math.random()*tips.length);	
	tips[randomnumber].style.display="block";
    
    //make the next link visible:	
	var links = getElementsByClass("next");
	//links[randomnumber].style.display = "inline";

}


function LoadNextTip(){	
		
	var tips = getElementsByClass("tip");
	var links = getElementsByClass("next");
	
	for(var i = 0; i < tips.length; i++){
		if (tips[i].style.display == "block") {
			tips[i].style.display = "none";	
			
			if (i == tips.length-1) {
				tips[0].style.display = "block";				
				//links[0].style.display="inline";									
		    } else {
				tips[i+1].style.display="block";	
				//links[i+1].style.display="inline";				
     		}
     		break;			
		}		
	}	
}