$(function(){
	$('.js_expoThumb').click(function(e){
		e.preventDefault();
		var thisUrl = $(this).parent('div').find('img').attr('src');
		var ticketUrl = $(this).attr('title');
		
		thisUrl = thisUrl.replace(/ /g, '%20');
		
		$(this).parents('.js_artist').find('.js_ticketUrl').attr('href', 'newTicket.php?obraId='+ticketUrl);
		$(this).parents('.js_artist').find('.js_artUrl').attr('href', 'obras.php?ref='+ticketUrl);
		$(this).parents('.js_artist').find('.js_artPic').css({
			backgroundImage	:	'url('+thisUrl+')'
		});

		return false;
	});
});


function myIVA() {
	document.getElementById('precioBase').value = document.getElementById('precioFinal').value - (document.getElementById('precioFinal').value*(document.getElementById('iva').value/100));
	document.getElementById('precioBase2').value = document.getElementById('precioFinal').value - (document.getElementById('precioFinal').value*(document.getElementById('iva').value/100));
}

<!--

var message="Funcion desactivada";

///////////////////////////////////
function clickIE4(){
if (event.button==2){
alert(message);
return false;
}
}

function clickNS4(e){
if (document.layers||document.getElementById&&!document.all){
if (e.which==2||e.which==3){
alert(message);
return false;
}
}
}

if (document.layers){
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown=clickNS4;
}
else if (document.all&&!document.getElementById){
document.onmousedown=clickIE4;
}

document.oncontextmenu=new Function("alert(message);return false")



// -->