function toogleMenuBackgroundDisplay(currentElement, display, menu_image)
{	
	if (document.getElementById)	
		var currentElementStyles = document.getElementById(currentElement);
	else
		if (document.all)
			var currentElementStyles = document.all[currentElement];
		else
			var currentElementStyles = new Object();
	
	if (currentElementStyles.style) 
		currentElementStyles = currentElementStyles.style;	
	
	if (display==0)
		currentElementStyles.backgroundImage = "none";
	else
	{
		if (menu_image==1)
			currentElementStyles.background = "url(images/menu_0_over.jpg)";
		else
			currentElementStyles.background = "url(images/menu_1_over.jpg)";
	}
} /*hides or displays a current element's background image*/