function applyVisibility(tag_id, flag)
{
    document.getElementById(tag_id).style.visibility = flag == true ? "visible" : "hidden";
}






/**verändert die Buttons
*/
function changeButton(id,flag){
	var obj = document.getElementById(id);
	var src = obj.src;
	
	
	if(flag){
		if(src.match(/_on/)){ 
			return;
		}else{
			obj.src = src.replace(/.gif/,"_on.gif");
		}
	}
	else{
		if(!src.match(/_on/)){ 
			return;
		}else{
			obj.src = src.replace(/_on.gif/,".gif");
		}
	}
	
	return 'kl';
}

function changeButton2(obj, flag, width){
    if(flag)
        obj.style.backgroundPosition = '-'+width+'px 0px';
    else
        obj.style.backgroundPosition = '0px 0px';
        
}

function changeButtonBackground(obj, color){
       obj.style.backgroundColor = color;
}

function changeButton2(obj, flag, width){
    if(flag)
        obj.style.backgroundPosition = '-'+width+'px 0px';
    else
        obj.style.backgroundPosition = '0px 0px';
        
}

/*lässt die dazuegehörigen(übergebenen OrderButtons aufleuchten)
und ruft nach eine Sekunde die methode auf die buttons wieder auszuschalten
*/
order_button_array = new Array();

function blinkOrder(){
    
    for(fx in order_button_array){
        changeButton(fx,true);
    }
    
	window.setTimeout("blinkOrderOff()",1000);
}

/*schaltet die Order Buttons wieder aus
*/
function blinkOrderOff(){
	for(fx in order_button_array){
        changeButton(fx,false);
    }
}






function historyBack(){
	window.history.back();
}

function historyForward(){
	window.history.forward();
}

function myPrint(){
	window.print();
}





//ertsellt eine Cookie assoziatives Array
function getCookieArray(){
    var ret = new Array();
    
    var arr = document.cookie.split(';');
    
    for(fx in arr){
        var tmp = arr[fx].split('=');
        
        if(tmp && tmp[0] && tmp[1]){
            tmp[0] = tmp[0].replace(/ /,'');
            tmp[1] = tmp[1].replace(/ /,'');
        
            ret[tmp[0]] = tmp[1];
        }
    }
    
    
    return ret;
}

//gibt den Cookie mit denNamen zurück
function getCookie(key){
    var tmp = getCookieArray();
    return tmp[key];
}


//schreibmaschine
var text = "";
var zaehler=0;

function mySchreib(str){
    text = str;
    schreib();
}

function schreib(){
    var ch = text.charAt(zaehler);
    
    if(document.all)
        document.getElementById('ssh_desc').innerHTML += ch;
    else
        document.getElementById('ssh_desc').firstChild.nodeValue += ch;
    
    
    zaehler++;
    if (zaehler<text.length) setTimeout("schreib()",33);
    return true;
}


//blinken
var blink_status = 1;

function blink(){
    var obj1 = window.document.getElementById('blink_1');
    var obj2 = window.document.getElementById('blink_2');
    
    if(obj1 && obj2){
        if(obj1.style.visibility == 'hidden')
            obj1.style.visibility = 'visible';
        else
            obj1.style.visibility = 'hidden';
            
        if(obj2.style.visibility == 'hidden')
            obj2.style.visibility = 'visible';
        else
            obj2.style.visibility = 'hidden';
        
        if(blink_status == 1)
        {
            window.setTimeout('blink()',300);
            blink_status = 2;
        } else {
            window.setTimeout('blink()',2500);
            blink_status = 1;
        }
    
    }
}