function preloadImages(the_images_array) {
  for (loop = 0; loop < the_images_array.length; loop++) {
    var an_image = new Image();
	an_image.src = the_images_array[loop]
  }
}


{
  var the_images = new Array('images/corporation_extra.gif, images/association_extra.gif, images/school_extra.gif, images/aboutus_roll.gif, images/association_roll.gif, images/contactus_roll.gif, images/corporate_roll.gif, images/event_roll.gif, images/news_roll.gif, images/school_roll.gif');
  preloadImages(the_images);
}

function showRoll(butt,newbutt){
	butt.src = "images/" + newbutt
}

function showRollExtra(butt,newbutt,extra){
	showRoll(butt,newbutt)
	
	var dd;
	dd = document.getElementById(extra + "Extra");
	if(dd.style.display == "block"){
		dd.style.display = "none";
	}else{
		dd.style.display = "block";
	}
}

function showMenu1(butt){
	showRoll(butt,'programs_roll.gif');
	showMenu()
}
function showMenu(){
	var dd;
	dd = document.getElementById("ddmenu");
	//dd.style.visibility= "visible"
	dd.style.top = 135;
	dd.style.left = 187;
	dd.style.display = "block";
}

function hideMenu1(butt){
	showRoll(butt,'programs.gif');
	hideMenu();
}
function hideMenu(){
	var dd;
	dd = document.getElementById("ddmenu");
	dd.style.display = "none";
}