var lastIFrameLink = null;
var lastIFrameLinkSytle = null;
var lastCardImage = null;
var cardImageList = new Array(); 
var lastCardLink = null;
var lastCardLinkClass = null;

function preloadCardImages() {
	mid_img = document.getElementById("card_mid_img");
	base_path = mid_img.getAttribute("base_path");
	card_links_div = document.getElementById("card_links");
	card_link = card_links_div.getElementsByTagName("a");
	
	for( i=0 ; i<card_link.length ; ++i ) {
		cardImageList[i] = new Image();
		cardImageList[i].src = base_path+card_link[i].getAttribute("the_image");
	}
}

function changeCardImage( inCardLink ) {
	//alert(inCardName);
	inCardName = inCardLink.getAttribute("the_image");
	if( lastCardLink != null ) {
		lastCardLink.className = lastCardLinkClass;
	}
	if( lastCardImage == inCardName ) {
		inCardName = "empty.gif";
		lastCardLink = null;
	} else  {
		lastCardLinkClass = inCardLink.className;
		
		inCardLink.className = "active";
		lastCardLink = inCardLink;
	}
	lastCardImage = inCardName;
	mid_img = document.getElementById("card_mid_img");
	base_path = mid_img.getAttribute("base_path");
	mid_img.src = base_path+inCardName;
}

function changeCardOverImage( inCardLink ) {
	//alert(inCardName);
		if( inCardLink == null ) {
			inCardName = "empty.gif";
		} else { 
			inCardName = inCardLink.getAttribute("the_image");
		}
	mid_img = document.getElementById("card_mid_over_img");
	base_path = mid_img.getAttribute("base_path");
	mid_img.src = base_path+inCardName;
}


function setIFrameLinkActive( inLink ) {
	
	if( lastIFrameLink != null ) {
		lastIFrameLink.className = lastIFrameLinkSytle;
	}
	lastIFrameLink = inLink;
	lastIFrameLinkSytle = inLink.className;
	
	 inLink.className = "active";
}

function openFreeSMS(inLink) {
	var test = window.open(inLink.href,"realstate","menubar=no,statusbar=no,width=900,height=550,resizable=yes,scrollbars=yes");
	test .focus();
	return false;
}

function openGeldWechsler(inLink) {
	var test = window.open(inLink.href,"realstate","menubar=no,statusbar=no,width=900,height=450,resizable=yes,scrollbars=yes");
	test .focus();
	return false;
}

function openSetCard(inLink) {
	var test = window.open(inLink.href,"setcard","menubar=no,statusbar=no,width=600,height=200");
	test .focus();
	return false;
}

function openRealstate(inLink) {
	var test = window.open(inLink.href,"realstate","menubar=no,statusbar=no,width=620,height=600,resizable=yes,scrollbars=yes");
	test .focus();
	return false;
}

function prepareLinks() {

	var main_menu = getDivByToc("main_menu");
	links = main_menu.getElementsByTagName("a");
	if (links.length) {
    	for (var i = 0; i < links.length; i++) {
    		if( isLinkActive(links[i].href) ) {
    			links[i].className = "active";
    		}
    	}
    }
    
    var sub_menu = getDivByToc("side_menu");
	links = sub_menu.getElementsByTagName("a");
	if( links != null ) {
		if (links.length) {
	    	for (var i = 0; i < links.length; i++) {
	    		if( isLinkActive(links[i].href) ) {
	    			links[i].className = "active";
	    		} else if(links[i].getAttribute("toc")=="section") {
	   				var div = toc_section_parent(links[i]);
	   				var child = collapsible_child(div);
	        		if (child) {
	        			if( child.style ) {
	        				child.style.display = "none";
	        			} else {
	        				child.visibility = "hidden";
	        			}
	        		}
	        		
	    		}
	    	}
	    }
    }
    
}

function getDivByToc( inToc ) {
	divs = document.getElementsByTagName("div");
	
	if (divs.length) {
		for (var i = 0; i < divs.length; i++) {
			if( divs[i].getAttribute("toc") == inToc ) {
			
				return divs[i];
			}
    	}
	}
}

function isLinkActive( link ) {

	real_link = link.substring(0, link.length-5)+"/";
    current_url = new String(document.location);
    current_url = current_url.substring(0,current_url.length-5)+"/";
    current_url = current_url.substring(0,real_link.length);
	
    return ( real_link == current_url );
}

function collapsible_child(parent) {
    // Get the first descendant with toc="collapsible".
    // To get all descendants, ask for *.
    var children = parent.getElementsByTagName("span");
	
	if (children.length) {
		for (var i = 0; i < children.length; i++) {
            var child = children[i];
            if (child.getAttribute("toc") == "collapsible") {
                return child;
            }
        }
	} else if (children) {
		return children;
    }
}

function toc_section_parent(element) {
    // Find the first parent with a toc attribute of "section".
    var toc_parent = element.parentNode;
    
    while (toc_parent) {
        if (toc_parent.tagName == "BODY") {
            // Have to stop checking here, because the HTML element above this doesn't have a getAttribute() function
			// and will crash the next check.
            return;
        }
        
        if (toc_parent.getAttribute("TOC") == "section") {
            return toc_parent;
        }
        
        toc_parent = toc_parent.parentNode;
    }
}