function do_dropdown_mouseover(){
				showElement('sp_dropdown')
			}
			
			function do_dropdown_mouseout(){
				hideElement('sp_dropdown')
			}
			
			function returnDocumentWidth(){
				var w = 0;
				if( typeof( window.innerWidth ) == 'number' ) {
					//Not IE
					return window.innerWidth;
				} else {
					if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight )) {
						//IE 6+ in 'standards compliant mode'
						return document.documentElement.clientWidth;
					} else {
						if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
							//IE 4 compatible
							return document.body.clientWidth;
						}
					}
				}
			}
			
			function returnDropdownXpos(){
				return returnDocumentWidth() / 2 + 240;
			}