function showOrHideElement(elementType, key, show, hide) {
										var elementArray = document.getElementsByTagName(elementType.toUpperCase());

										for(var i = 0 ; i < elementArray.length ; i++) {
											if(elementArray[i].id.toUpperCase().indexOf(key.toUpperCase()) > -1) {
												if(show) {
													if(elementType == 'TR' ) {
														alterRowVisibility(elementArray[i].id, 'show');                        
													}
													
													if(elementType == 'DIV' ) {
														showdiv(elementArray[i].id);
													}
													// Overige types toevoegen

												} else if(hide){
													if(elementType == 'TR' ) {
														alterRowVisibility(elementArray[i].id, 'hide');                        
													}
													if(elementType == 'DIV' ) {
														hidediv(elementArray[i].id);
													}
													// Overige types toevoegen

												}
											}
										}
									}
									
									function alterRowVisibility(id, option){
										var showRow;
										if(option=='show'){
											if(navigator.appName.indexOf("Internet Explorer") != -1) {
												document.getElementById(id).style.display="block";
											} else {
												document.getElementById(id).style.display = "table-row";   
											}
										} else if(option=='hide') {
											document.getElementById(id).style.display="none";
										}else {
											document.getElementById(id).style.display="none";
										}
									}