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];
		}
	}
}


// a supp


function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}
var preloadFlag = false;
function preloadImages() {
	
	if (document.images) {
		/*cal_over = newImage("./images/cal-over.jpg");
		ate_over = newImage("./images/ate-over.jpg");
		cho_over = newImage("./images/cho-over.jpg");
		eco_over = newImage("./images/eco-over.jpg");
		voi_over = newImage("./images/voi-over.jpg");
		tel_over = newImage("./images/tel-over.jpg");
		cont_over = newImage("./images/cont-over.jpg");
		*/
		preloadFlag = true;
	}
}

function openWord( page )
{
	window.open(page,"docword",'toolbar=0,location=0,directories=0,status=0,menubar=1,scrollbars=0,resizable=1,width=500,height=380');
}

function openPhoto( page )
{
	window.open(page,"photo",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=1,width=500,height=380');
}

function openPhotoBig( page )
{
	window.open(page,"photo",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=1,width=600,height=450');
}

function openMp( page )
{
	window.open(page,"mp",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=1,width=350,height=450');
}