function Global( )
{
	var self = this;
		
	this.enable = function ( aNode )
	{
		dojoWrapper.setStyle ( aNode, "display", "block" );
	}
	
	this.disable = function ( aNode )
	{
		dojoWrapper.setStyle ( aNode, "display", "none" );
	}
	
	
	this.setBorderHeight = function ()
	{
		// Get elements involved
		var innerContainer = dojoWrapper.getById("content");
		var leftBorder = dojoWrapper.getById("content_border_left");
		var rightBorder = dojoWrapper.getById("content_border_right");
		
		// Get the heights
		var height = dojoWrapper.getStyle(innerContainer, "height");

		// Set the unit
		height += "px";
		
		
		// Set the height to the borders left and right
		dojoWrapper.setStyle(leftBorder, "height", height);
		dojoWrapper.setStyle(rightBorder, "height", height);
		
	}
	
	this.preloadImages = function ()
	{
		
		for ( var i = 0; i < preloadImageUrls.length; i++ )
		{
			var preloadImageObject = new Image ();
			preloadImageObject.style.display = "none";
			preloadImageObject.src = preloadImageUrls[ i ];
			
			var div = document.createElement ( "div" );
			div.style.display = "none";
			div.style.backgroundImage = "url(" + preloadImageUrls[ i ] + ")";
			document.getElementById ( "dummy" ).appendChild ( preloadImageObject );
			document.getElementById ( "dummy" ).appendChild ( div );
		}
	}
	
	this.enableContactTooltip = function ()
	{
		var contactButton = dojoWrapper.getById ( "header_contact" );
		var contactTooltip = dojoWrapper.getById ( "header_contact_tooltip" );
		
		var enableAgent = function ()
		{
			self.enable ( contactTooltip );
		}
		
		
		var disableAgent = function ()
		{
			self.disable ( contactTooltip );
		}
		
		dojoWrapper.connect ( contactButton, "onmouseover", enableAgent );
		dojoWrapper.connect ( contactButton, "onmouseout", disableAgent );
	}
	
	this.init = function ()
	{
		dojoWrapper.addOnLoad ( function () { self.preloadImages () } );
		
		dojoWrapper.addOnLoad ( function () { self.setBorderHeight () } );
		
		dojoWrapper.addOnLoad ( function () { self.enableContactTooltip () } );
	}
	
	this.init ();
}