function canShowImages() {

			    	browser = navigator.appName;

   				version = parseInt(navigator.appVersion);

				if((browser.toLowerCase()=="netscape")&&(version>2)) return true;

    				if((browser.toLowerCase()=="microsoft internet explorer")&&(version>=4)) return true;

        			return false;

				}


function loadImage() {

   				if(canShowImages()) {

       			up_normal.src = "../obrazky/up_grey.gif";

          			up_act.src = "../obrazky/up_red.gif";

				next_normal.src = "../obrazky/next_grey.gif";

    				next_act.src = "../obrazky/next_red.gif";

				prev_normal.src = "../obrazky/prev_grey.gif";

    				prev_act.src = "../obrazky/prev_red.gif";

        			}

			}


function activate( obr ) {

   				if(canShowImages()) {

       			img = eval( obr+"_act.src" );

          			document [obr].src = img;

        			}

			}


function normal( obr ) {

   				if(canShowImages()) {

       			img = eval( obr+"_normal.src" );

          			document [obr].src = img;

        			}

			}


function cp(url,features)

				{

			 	var params = "toolbar=no,location=no,directories=no,status=no,"+

     				"menubar=no,scrollbars=no,resizable=no,top=50,left=40,";

				swin=window.open(url,"Descr",params+features);

				}



if(canShowImages()) 

			{

   			up_normal = new Image(56,24);

      			up_act = new Image(56,24);

			next_normal = new Image(24,56);

   			next_act = new Image(24,56);

			prev_normal = new Image(24,56);

   			prev_act = new Image(24,56);

			loadImage(); 

			}


function arch(url)

				{

			 	var params = "toolbar=no,location=no,directories=no,status=no,"+

     				"menubar=no,scrollbars=no,resizable=yes,width=465,height=311";

				swin=window.open(url,"Descr",params);

				}



defaultStatus='';