//declare
var submenu = new Array();
var tmr = new Array();
var adj = new Array();
var last_zIndex = 201;
var lastOverId = '';

// EXAMPLE CONFIG

var menuWidth 		= 143;			//width of submenu in pixels
var menuWidth2 		= 143;
var alignSubmenu 	= 'bottom';		//bottom or right side of the main button.
var useLastItemCSS	= true;			//generate last menu item too
									//if false, it will behave as a normal item
									//and the css menuItemLast class will not be used

//fisrt submenu tree
// END OF EXAMPLE CONFIG

/*
//first
submenu['menu1'] = new Array();
submenu['menu1'][0] = menuItem('my own website','http://www.daantje.nl','_top');
submenu['menu1'][1] = menuItem('other sites');
	submenu['menu1_1'] = new Array();
	submenu['menu1_1'][0] = menuItem('google','http://www.google.nl','demoFrame');
	submenu['menu1_1'][1] = menuItem('/.','http://www.slashdot.org','demoFrame');
	submenu['menu1_1'][2] = menuItem('Open in _BLANK:');
		submenu['menu1_1_2'] = new Array();
		submenu['menu1_1_2'][0] = menuItem('check test','http://www.google.nl','_blank');
		submenu['menu1_1_2'][1] = menuItem('test again','http://www.slashdot.org','_blank');
submenu['menu1'][2] = menuItem('This should be the last one');

//second 
submenu['menu2'] = new Array();
submenu['menu2'][0] = menuItem('project 1','http://www.daantje.nl','_self');
submenu['menu2'][1] = menuItem('project 2');
*/

//build or unhide submenu div...
function buildSubmenu(obj){
	lastOverId = obj.id;
	
	var cell_type = "normal";
	if(buildSubmenu.arguments.length == 2)
		cell_type = buildSubmenu.arguments[1];

	//get common part of div id
	menuPath = obj.id.split('_');

	//unset mousout of parent menus and make sure they are visible...
	x = "div";
	for(i=0;i<menuPath.length;i++){
		x+= '_' + menuPath[i];
		if(document.getElementById(x)){
			if(tmr[x])
				window.clearTimeout(tmr[x]);
			document.getElementById(x).style.visibility = 'visible';
		}
	}

	//check if we have a submenu of the obj...
	if(submenu[obj.id]){
		//check if allready build...
		c = document.getElementById('div_' + obj.id);
		if(c){
			//unhide...
			c.style.visibility = 'visible';
			c.style.zIndex = last_zIndex++;
		}else{
			//calc position of mouseover
			d = obj;
			if(d){
				L_pos = d.offsetLeft + d.offsetWidth - 1;
				T_pos = d.offsetTop - 3;
				while(d.offsetParent){
					d = d.offsetParent;
					L_pos+= d.offsetLeft;
					T_pos+= d.offsetTop;
				}
			}	

			//patch first submenu to go right below the main buttons...
			if(obj.className.indexOf('menuItem') < 0 && alignSubmenu == 'bottom'){
				L_pos-= obj.offsetWidth;
				T_pos+= obj.offsetHeight;
			}
			
			subObj = document.createElement('div');
			subObj.id = 'div_' + obj.id;
			subObj.className = 'submenu';
			subObj.style.position = 'absolute';
			subObj.style.zIndex = last_zIndex++;
				
			subObj.style.top = T_pos + 'px';
			subObj.style.left = L_pos + 'px';

			document.getElementsByTagName('body')[0].appendChild(subObj);


			//build html for submenu
			if(cell_type == "left")	
				content = "<div id=\"" + obj.id + "_0\" class=\"top_cell_left\" onmouseout=\"hideSubmenu(this)\" onmouseover=\"buildSubmenu(this)\"></div>";
			else
				content = "<div id=\"" + obj.id + "_0\" class=\"top_cell\" onmouseout=\"hideSubmenu(this)\" onmouseover=\"buildSubmenu(this)\"></div>";
				
			m = submenu[obj.id];
			for(i=0;i<m.length;i++){

				//determin target for onclick...
				//	(sorry, I should rewrite this routine...)
				if(!m[i][2] || m[i][2] == '_self'){
					act = "self.location.href='" + m[i][1] + "';";
				}else if(m[i][2] == '_top'){
					act = "top.location.href='" + m[i][1] + "';";
				}else if(m[i][2] == '_blank'){
                    act = "window.open('" + m[i][1] + "');";
				}else if(m[i][2] == 'js'){
                    act = m[i][1];
				}else{
					//get javascript target (not tested yet)
					//TODO: check how to do this cleanly
					act = "window.frames['"+m[i][2]+"'].location.href='" + m[i][1] + "';";
				}

				//make item
				if(cell_type == "left")
					content+= "<div onmouseout=\"hideSubmenu(this, 'left')\" onmouseover=\"buildSubmenu(this, 'left')\" "+ (m[i][1] ? "onclick=\""+ act + "\" " : "") +" class=menuItemLeft" + (i==0 ? 'First' : (i==(m.length -1) && useLastItemCSS ? 'Last' : '')) + " id=\"" + obj.id + "_" + i +"\">" + m[i][0] + "</div>";
				else
					content+= "<div onmouseout=\"hideSubmenu(this)\" onmouseover=\"buildSubmenu(this)\" "+ (m[i][1] ? "onclick=\""+ act + "\" " : "") +" class=menuItem" + (i==0 ? 'First' : (i==(m.length -1) && useLastItemCSS ? 'Last' : '')) + " id=\"" + obj.id + "_" + i +"\">" + m[i][0] + "</div>";
				adj[i] = obj.id + "_" + i;
			}	
			
			if(cell_type == "left")			
				content += "<div class=\"bottom_cell_left\" id=\"" + obj.id + "_" + i + "\" class=\"top_cell\" onmouseout=\"hideSubmenu(this)\" onmouseover=\"buildSubmenu(this)\">&nbsp;</div>";
			else
				content += "<div class=\"bottom_cell\" id=\"" + obj.id + "_" + i + "\" class=\"top_cell\" onmouseout=\"hideSubmenu(this)\" onmouseover=\"buildSubmenu(this)\">&nbsp;</div>";

			//insert new menu
			subObj.innerHTML = content;

			//make all just made div's the same width...
			for(i=0;i<adj.length;i++)
				document.getElementById(adj[i]).style.width = subObj.style.width;
		}
	}
}

//hide a submebu div
function hideSubmenu(obj){
	//get common part of div id
	closePath = obj.id.split('_');

	//hide path
	x = "div";
	for(i=0;i<closePath.length;i++){
		x+= '_' + closePath[i];
		if(document.getElementById(x))
			tmr[x] = window.setTimeout("document.getElementById('"+x+"').style.visibility = 'hidden';",100);
		//The timeout above is needed for MSIE browsers... Or else the menu's will disapear on EVERY mousout!!!
		//Please get a normal browser like Firefox, Mozilla or Opera!!
	}
}

//add an menu item to the config array (called in the config lines)
function menuItem(txt,url,tar){
	return new Array(txt,url,tar);
}

//*** Patch for firefox bug with focus on mouseover...
//		This function should be called onMouseOver of every iFrame that's under the menu structure.
function iFramePatch(){
	if(!document.all && lastOverId)
		hideSubmenu(document.getElementById(lastOverId));
}

//*** Now a patch for MSIE lag of CSS2 compliance!!
if(navigator.userAgent.indexOf('MSIE')>=0 && navigator.userAgent.indexOf('Opera')==-1){
	document.onmouseover = function(){
		obj = event.srcElement;
		if(obj.className == 'menuItemFirst' || obj.className == 'menuItem' || obj.className == 'menuItemLast')
			obj.className+='Over';
		
		if(obj.className == 'menuItemLeftFirst' || obj.className == 'menuItemLeft' || obj.className == 'menuItemLeftLast')
			obj.className+='Over';
	}
	document.onmouseout = function(){
		obj = event.srcElement;
		if(obj.className == 'menuItemFirstOver' || obj.className == 'menuItemOver' || obj.className == 'menuItemLastOver')
			obj.className = obj.className.substring(0,(obj.className.length - 4));
			
		if(obj.className == 'menuItemLeftFirstOver' || obj.className == 'menuItemLeftOver' || obj.className == 'menuItemLeftLastOver')
			obj.className = obj.className.substring(0,(obj.className.length - 4));
	}
}
//*** End of msie patch