function getXhr() {
		var xhr = null; 
		if(window.XMLHttpRequest) {// Firefox et autres
			xhr = new XMLHttpRequest(); 
			if (xhr.overrideMimeType) {
				xhr.overrideMimeType('text/xml');
				return  xhr;
				}
		}else if(window.ActiveXObject){ // Internet Explorer 
			try {
				return new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				return new ActiveXObject("Microsoft.XMLHTTP");
			}
		}
	}
	
	function getImage(img) {
		document.getElementById('img_spec').innerHTML  = '<img src="../images/commun/ajax-loader.gif" alt=" " />';
		var xhr = getXhr();
		xhr.open('GET', '../getImage.php?idImage='+img, true);
		xhr.send(null);
		xhr.onreadystatechange = function(){
			if(xhr.status == 200) { 
			document.getElementById('img_spec').innerHTML = '<img src="../'+xhr.responseText+'" alt=" "  width="207" height="134" />';
			//node = document.getElementById('img_spec');
			//node.childNodes[0].setAttribute('src', '../'+xhr.responseText);
			}
		}
	}

	function changeLien(liens) {
		var L = liens.length;
		
		for(i = 0; i < L; i++) {		
			liens[i].onclick = function() {
			/*Ne pas récupérer l'attribut href IE renvoie une url absolue*/
			getImage(this.childNodes[0].getAttribute('alt'));
			return false;
			}
		}
		
	}

	function getLien() {
		var node = document.getElementById('photos_spectacles');
		var list = node.getElementsByTagName('a');
		/*console.log(list);*/
		changeLien(list);
	}
	
	window.onload = function(){
		getLien();
	}