function selectColor(n) {
  document.getElementById("p_color").selectedIndex = n; // tak jak w m-produkt.html
}

function getposOffset(overlay, offsettype){
var totaloffset=(offsettype=="left")? overlay.offsetLeft : overlay.offsetTop;
var parentEl=overlay.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}

function legend(){
  if (document.getElementById) {
    var curobj=document.getElementById("legend-activate");
    var subobj=document.getElementById("legend");
    var xpos=getposOffset(curobj, "left");
    var ypos=getposOffset(curobj, "top");
    subobj.style.left=xpos+"px";
    subobj.style.top=ypos+"px";
    subobj.style.display=(subobj.style.display!="block" ? "block" : "none");
    return false
  }
  else
    return true
}

function getPageScroll(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}

// -----------------------------------------------------------------------------------

//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}

	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}







function showMessage(txt) {
  var m1 = document.getElementById("messagebk");
  var m2 = document.getElementById("message");
  if (m1&&m2) {
    var pagesize = getPageSize();
    var pagescroll = getPageScroll();
    var t = pagescroll[1] + Math.floor(pagesize[3] / 2) - 102;
    t += "px";
    m1.style.top = t;
    m2.style.top = t;
    var m3 = document.getElementById("messagetxt");
    if (m3) {
      m3.innerHTML = txt;
    }
  }
}

function hideMessage() {
  var m1 = document.getElementById("messagebk");
  var m2 = document.getElementById("message");
  if (m1&&m2) {
    m1.style.top = "-5000px";
    m2.style.top = "-5000px";
  }
}