function InitButtons() {
	        if (document.images) {
	                
	                shoOFF      = new Image();
	                shoOFF.src  = "pix/shop_nurnatur.gif";
	                shoOVR      = new Image();
	                shoOVR.src  = "pix/shop_h_nurnatur.gif";
	                
	                aktOFF      = new Image();
	                aktOFF.src  = "pix/aktuell_nurnatur.gif";
	                aktOVR      = new Image();
	                aktOVR.src  = "pix/aktuell_h_nurnatur.gif";
	                
					sprOFF      = new Image();
	                sprOFF.src  = "pix/sprechstunde_nurnatur.gif";
	                sprOVR      = new Image();
	                sprOVR.src  = "pix/sprechstunde_h_nurnatur.gif";
					
	                ratOFF      = new Image();
	                ratOFF.src  = "pix/ratgeber_nurnatur.gif";
	                ratOVR      = new Image();
	                ratOVR.src  = "pix/ratgeber_h_nurnatur.gif";
					
					ihrOFF      = new Image();
	                ihrOFF.src  = "pix/ihredrogerie_nurnatur.gif";
	                ihrOVR      = new Image();
	                ihrOVR.src  = "pix/ihredrogerie_h_nurnatur.gif";
	                
	               cloOFF      = new Image();
	                cloOFF.src  = "pix/box_sh_tr_close_nurnatur.gif";
	                cloOVR      = new Image();
	                cloOVR.src  = "pix/box_sh_tr_close_h_nurnatur.gif";
					
					infOFF      = new Image();
	                infOFF.src  = "pix/box_sh_tr_nurnatur.gif";
	                infOVR      = new Image();
	                infOVR.src  = "pix/box_sh_tr_h_nurnatur.gif";
	                
	                le5OFF      = new Image();
	                le5OFF.src  = "pix/klee_down.gif";
	                le5OVR      = new Image();
	                le5OVR.src  = "pix/klee_down_h.gif";
					
					clicked = "";
                }
        }
        
		 // Button mouse event handler.
		function BtnAct(imgBtn, sAction)
		{
		if (document.images) {
		        if (sAction == "CLK") {
		                if (clicked != "") {
		                        document[clicked].src = eval(clicked + "OFF.src");
		                }
		                clicked = imgBtn;
		                document[imgBtn].src = eval(imgBtn + "OVR.src");
		        } else if (clicked != imgBtn)
		                document[imgBtn].src = eval(imgBtn + sAction + ".src");
			} // BtnAct()
		}
		

		function navBarUnselect() {
			clicked = '';
			BtnAct('sho', 'OFF');
			BtnAct('akt', 'OFF');
			BtnAct('rat', 'OFF');
			BtnAct('glo', 'OFF');
			BtnAct('clo', 'OFF');
		}
		
		function BtnClo(imgBtn, sAction) {
			if (document.images) {
				document[imgBtn].src = eval("clo" + sAction + ".src");
			}
		}
		
		function BtnInf(imgBtn, sAction) {
			if (document.images) {
				document[imgBtn].src = eval("inf" + sAction + ".src");
			}
		}