function switchDiv(strDivName,bolVisible){
	objElement = document.getElementById(strDivName);
	if(!bolVisible) {
		objElement.style.visibility = "hidden";
	}
	else {
		objElement.style.visibility = "visible";
   }
}


function csere(id) {
	for(i=1; i<=8; i++){
		if (document.layers) document.layers['main'+i+''].visibility = "hide"
		else if (document.all) document.all['main'+i+''].style.visibility = "hidden"
		else if (document.getElementById) document.getElementById('main'+i+'').style.visibility = "hidden";
	}
	
	elohoz(id);
	changeOpac(25, id);
	opacity(id, 25, 100, 1000);

	//lábléc elohozása - eltüntetése
	if (document.layers) document.layers['footer'].visibility = "hide"
	else if (document.all) document.all['footer'].style.visibility = "hidden"
	else if (document.getElementById) document.getElementById('footer').style.visibility = "hidden";
	
	if(id == 'main1'){
		if (document.layers) document.layers['footer'].visibility = "show"
		else if (document.all) document.all['footer'].style.visibility = "visible"
		else if (document.getElementById) document.getElementById('footer').style.visibility = "visible";
	}
}

function elohoz(id){
	if (document.layers) document.layers[''+id+''].visibility = "show"
	else if (document.all) document.all[''+id+''].style.visibility = "visible"
	else if (document.getElementById) document.getElementById(''+id+'').style.visibility = "visible";
}

<!--átmenetes eltuntetés
function opacity(id, opacStart, opacEnd, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
			if(i==opacEnd){
				setTimeout("elohoz('" + id + "')",(timer * speed));
			}
		}
	}
}

function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
	if(opacity==0) {
		object.visibility = "hidden";
	}
}
function opacityLoad(id, opacStart, opacEnd, millisec) {
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

function SZHMenuSzinezes(id){
	for(i=1; i<=11; i++){
		if(i == id){	
			if (document.layers) document.layers['link'+i+''].color="#0085A6"
			else if (document.all) document.all['link'+i+''].style.color="#0085A6"
			else if (document.getElementById) document.getElementById('link'+i+'').style.color="#0085A6"
		}
		else{
			if (document.layers) document.layers['link'+i+''].color="#b81a74"
			else if (document.all) document.all['link'+i+''].style.color="#b81a74"
			else if (document.getElementById) document.getElementById('link'+i+'').style.color="#b81a74"
		}
	}
}

function trim(str){
 while (str.substring(0,1) == ' ')
  str = str.substring(1, str.length);

 while (str.substring(str.length-1, str.length) == ' ')
  str = str.substring(0,str.length-1);

 return str;
}