function sh(parentId) {
	myParent = document.getElementById(parentId)
		if (myParent.style.display=="none" || myParent.style.display=="") {
				myParent.style.display="block"
						if(parentId == 'search'){
									document.getElementById('searching').focus();
											}else if(parentId == 'ajout'){
														document.getElementById('link').focus();
																}else{
																			this.focus();
																					}
																						} else {
																								myParent.style.display="none"
																									}
																									}