if (document.images)
		{
				button_demo_on = new Image();
				button_demo_on.src = "images/demo_button_on.gif";
				button1_on = new Image();
				button1_on.src = "images/imagine_on.gif";
				button2_on = new Image();
				button2_on.src = "images/access_on.gif";
				button3_on = new Image();
				button3_on.src = "images/btn-syb_on.gif";
				button4_on = new Image();
				button4_on.src = "images/design_on.gif";

				button_demo_off = new Image();
				button_demo_off.src = "images/demo_button_off.gif";
				button1_off = new Image();
				button1_off.src = "images/imagine_off.gif";
				button2_off = new Image();
				button2_off.src = "images/access_off.gif";
				button3_off = new Image();
				button3_off.src = "images/btn-syb_off.gif";
				button4_off = new Image();
				button4_off.src = "images/design_off.gif";
		}

function on(imgName)
{ if (document.images)
		{ document[imgName].src = eval(imgName + "_on.src"); }
		}

function off(imgName)
{ if (document.images)
		{ document[imgName].src = eval(imgName + "_off.src"); }
		}

onerror=null;