function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		main_entries_Research_Committee_over = newImage("images/main_entries_Research-Co-05.gif");
		main_entries_05_main_entries_Deadlines____Announcements__up = newImage("images/main_entries_05-main_entrie.gif");
		main_entries_Guidelines_over = newImage("images/main_entries_Guidelines-ove.gif");
		main_entries_08_main_entries_Deadlines____Announcements__up = newImage("images/main_entries_08-main_entrie.gif");
		main_entries_09_main_entries_Deadlines____Announcements__up = newImage("images/main_entries_09-main_entrie.gif");
		main_entries_Research_Projects_over = newImage("images/main_entries_Research-Pr-18.gif");
		main_entries_Research__Manual_over = newImage("images/main_entries_Research--M-22.gif");
		main_entries_15_main_entries_Deadlines____Announcements__up = newImage("images/main_entries_15-main_entrie.gif");
		main_entries_E_Research_over = newImage("images/main_entries_E-Research-ove.gif");
		main_entries_Publications_over = newImage("images/main_entries_Publications-o.gif");
		main_entries_Deadlines____Announcements__over = newImage("images/main_entries_Deadlines---38.gif");
		main_entries_Important___Links_over = newImage("images/main_entries_Important---41.gif");
		preloadFlag = true;
	}
}

/////////////////////////////////////////////////////////////////////
/////////////////////// My functions ////////////////////////////////
/////////////////////////////////////////////////////////////////////

function show_subcat(order){
hide_all();
document.all("subcat"+order).style.visibility = 'visible';
}

/////////////////////////////////////////////////////////////////////


function hide_all(){
for (order=1; order <8; order++)
	if (document.all("subcat"+order))document.all("subcat"+order).style.visibility = 'hidden';
}


/////////////////////////////////////////////////////////////////////

function change_background(item,bg_color,new_color){
item.style.backgroundColor=bg_color;
item.style.color=new_color;
}

/////////////////////////////////////////////////////////////////////