// JavaScript Document						
						function show_hideInstruct() {
							var instruct_Obj = document.getElementById('instructions');
							//find if need to show or hide instructions
							var left_val = instruct_Obj.style.left;
							if (left_val == '-57px') {
								//hide the instructions
								instruct_Obj.style.left = '-660px';
								document.getElementById('map_instuct_button').style.display = 'block';
								document.getElementById('instruct_container').style.zIndex = '-1';
								document.getElementById('instructions').style.zIndex = '-1';
							}
							if (left_val == '-660px') {
								//show instructions
								instruct_Obj.style.left = '-57px';
								document.getElementById('map_instuct_button').style.display = 'none';
								document.getElementById('instruct_container').style.zIndex = '800';
								document.getElementById('instructions').style.zIndex = '801';
							}
							else {
								//on error hide by default
								instruct_Obj.style.left = '-660px';
								document.getElementById('map_instuct_button').style.display = 'block';
								document.getElementById('instruct_container').style.zIndex = '-1';
								document.getElementById('instructions').style.zIndex = '-1';
							}
							
						}