var GO = {
	basePath: "",
	iconPath: "/icons",
	
	removeElement: function(el)
	{
		if(typeof el == 'string')
			el = document.getElementById(el);
		el.parentNode.removeChild(el);
	},
	
	getElementsByClass: function(node,searchClass,tag) {
		var classElements = [];
		if(!tag)
			tag = '*';
		var els = node.getElementsByTagName(tag);
		var c = els.length;
		var rx = new RegExp("(^|\\s)" + searchClass + "(\\s|$)");
		for(var i=0; i<c; i++) {
			if( rx.test(els[i].className) )
				classElements.push(els[i]);
		}
		return classElements;
	},
	
	getViewportWH: function()
	{
		var width = 0;
		var height = 0;
		
		if( window.innerWidth && window.innerHeight)
		{
			width = window.innerWidth - 20;
			height = window.innerHeight - 20;
			//alert("windowobj WH inner w: "+width+" h: "+height);
		}
		else if( document.body )
		{
			if( document.body.clientWidth )
				width = document.body.clientWidth;
			if( document.body.clientHeight )
				height = document.body.clientHeight;
			//alert("WH body w: "+width+"h: "+height);
		}
		else if( document.documentElement )
		{
			if( document.documentElement.clientWidth )
				width = document.documentElement.clientWidth;
			if(document.documentElement.clientHeight )
				height = document.documentElement.clientHeight;
			//alert("WH docelement w: "+width+"h: "+height);
		}
	
		return {w:width,h:height};
	},

	getViewportScrollXY: function()
	{
		var scrollx = 0;
		var scrolly = 0;
	
		if( document.body )
		{
			if( document.body.scrollLeft )
				scrollx = document.body.scrollLeft;
			if( document.body.scrollTop )
				scrolly = document.body.scrollTop;
			//alert("scrollXY body x: "+scrollx+"y: "+scrolly);
		}
		else if( window.pageXOffset && window.pageYOffset)
		{
			scrollx = window.pageXOffset;
			scrolly = window.pageYOffset;
			//alert("scrollXY pageXOffset x: "+scrollx+"y: "+scrolly);
			
		}
		else if( window.scrollX && window.scrollY)
		{
			scrollx = window.scrollX;
			scrolly = window.scrollY;
			//alert("scrollXY scrollX x: "+scrollx+"y: "+scrolly);
		}
		else if( document.documentElement )
		{
			if( document.documentElement.scrollLeft )
				scrollx = document.documentElement.scrollLeft;
			if(document.documentElement.scrollTop )
				scrolly = document.documentElement.scrollTop;
			//alert("scrollXY documentElement x: "+scrollx+"y: "+scrolly);
		}
	
		return {x:scrollx,y:scrolly};
	},

	addevent: function(obj,eventname,fnc)
	{
		if ( typeof(obj.addEventListener) != 'undefined' )
			obj.addEventListener( eventname, fnc, false );
		else if ( typeof(obj.attachEvent) != 'undefined' )
			obj.attachEvent( "on"+eventname, fnc );
	},
	
	//--------------------------------------------------------------------------------------------------
	
	alertDiv: function(opts) {
	
		if(!document.body)
			return null;
	
		var div = document.createElement('DIV');
		div = document.body.appendChild(div);
		
		div.style.cssText = opts.style;
		div.className = opts.className;
		
		var win_scroll = this.getViewportScrollXY();

		if(opts.html)
			div.innerHTML = opts.html;
		else {
		 if(typeof opts.el == 'string')
				opts.el	= document.getElementById(opts.el);
			var nn = opts.el.cloneNode(true);
			nn.style.display = '';
			div.appendChild(nn);
		}
	
		if(opts.w)
			div.style.width = (opts.w)+"px";
		if(opts.h)
			div.style.height = (opts.h)+"px";

		var win_size = this.getViewportWH();
		
		if(!opts.x)
			opts.x = (win_size.w-div.offsetWidth)/2;
		if(!opts.y)
			opts.y = (win_size.h-div.offsetHeight)/2;
			
		div.style.position = 'absolute';
		div.style.left = (win_scroll.x+opts.x)+"px";
		div.style.top = (win_scroll.y+opts.y)+"px";
		
		var self = this;
		
		var arr = this.getElementsByClass(div,'closeButton');
		if(arr && arr.length)
		{
			for(var i=0;i<arr.length;i++)
				arr[i].onclick = function(){ self.removeElement(div); }
		}
		
		return div;
	},

	windowOpen: function(strUrl, strWindowName , strWindowFeatures) {
		if(strWindowFeatures)
			var new_win = window.open(strUrl, strWindowName,strWindowFeatures);
		else
			var new_win = window.open(strUrl, strWindowName);
			
		if(!new_win)
		{
			this.alertDiv({
				w: 330,
				//h: 50,
				style: "background: white;border: 2px outset #676767;font-size:12px;font-family:verdana;font-weight:bold;color:black;",
				html:	'<img src="'+GO.iconPath+'/bp_head.gif" style="margin:0;padding:0;border:0;float:left;display:inline;" />'+
						'<div class="closeButton" style="margin:2px;float:right;display:inline;width:15px;height:15px;background:transparent url('+GO.iconPath+'/tool-sprites-g.gif) no-repeat scroll 0 0"></div>'+
						'<div style="clear:both"></div>'+
						'<div style="padding:4px;">'+
						'Go!!! non riesce ad aprire una pop-up, utile al corretto funzionamento di tutto il sistema.<br>'+
						'E’ quindi necessario abilitare le pop-up. Segui il seguente link se hai bisogno di aiuto.<br>'+
						'Grazie. <a style="color:red;font-size:12px;font-family:verdana;font-weight:bold;" href="'+GO.basePath+'/scriba/flash/pop.html">Help!</a><br>'+
						'</div>'+
						'<div style="clear:both"></div>'
			});
		}
		
		return new_win;
	}
}

/*
setTimeout( function() { 
	GO.alertDiv({
		style: "background: #EFEFEF;border: 2px outset #676767;padding: 4px;",
		html: '<div class="closeButton" style="float:right;width:15px;height:15px;background:transparent url('+GO.iconPath+'/tool-sprites-g.gif) no-repeat scroll 0 0"> </div>'+
					'<img src="'+GO.iconPath+'/icon-error.gif" style="border:0;float:left;margin-right:5px" />'+
					'Non è stato possibile aprire la finestra PopUp! <br> <a href="/help/popup.html">Help</a>'
	});
}, 3000);
*/