var currOpac;


	var fadeSpeed = 20; //less is faster


	var fadeIncrement = 20; //greater is faster





//Menu Images 


	var mnuImage1 = new Image;


	mnuImage1.src = "images/mnu_home_over.gif";


	var mnuImage2 = new Image;


	mnuImage2.src = "images/mnu_practice_over.gif";


	var mnuImage3 = new Image;


	mnuImage3.src = "images/mnu_services_over.gif";


	var mnuImage4 = new Image;


	mnuImage4.src = "images/mnu_patients_over.gif";


	var mnuImage5 = new Image;


	mnuImage5.src = "images/mnu_physicians_over.gif";


	var mnuImage6 = new Image;


	mnuImage6.src = "images/mnu_contact_over.gif";








	function containsDOM (container, containee) {


  		var isParent = false;


  		do {


    			if ((isParent = container == containee))


      				break;


    		containee = containee.parentNode;


  		}


  		while (containee != null);


  		return isParent;


	}





	function checkMouseEnter (element, evt) {


  		if (element.contains && evt.fromElement) {


    			return !element.contains(evt.fromElement);


  		}


		else if (evt.relatedTarget) {


    			return !containsDOM(element, evt.relatedTarget);


  		}


	}





	function checkMouseLeave (element, evt) {


  		if (element.contains && evt.toElement) {


    			return !element.contains(evt.toElement);


  		}


  		else if (evt.relatedTarget) {


    			return !containsDOM(element, evt.relatedTarget);


  		}


	}


	


	function fadeIn(theID){


		hideAll();


		currOpac=0;


		/*if(theID=="sub5" && screen.availWidth=="800"){


			document.getElementById('sub5').style.margin="0px -40px";


		}*/


		document.getElementById(theID).style.filter = "Alpha(Opacity="+currOpac+")";


		document.getElementById(theID).style.MozOpacity=currOpac/100;


		document.getElementById(theID).style.display = "block";


		window.setTimeout("doFade('"+theID+"')",fadeSpeed);


	}





	function doFade(theID){


		currOpac = currOpac + fadeIncrement;


		if(currOpac >= 100){


			currOpac=100;


			document.getElementById(theID).style.filter="Alpha(Opacity="+currOpac+")";


			document.getElementById(theID).style.MozOpacity=currOpac/100;


			return;


		}


		document.getElementById(theID).style.filter="Alpha(Opacity="+currOpac+")";


		document.getElementById(theID).style.MozOpacity=currOpac/100;


		window.setTimeout("doFade('"+theID+"')",fadeSpeed);	


	}





	function hideAll(){


		for(i=2;i<=6;i++){


			document.getElementById("sub" + i).style.display="none";


		}


		document.getElementById('menu_home').src='images/mnu_home.gif';


		document.getElementById('menu_practice').src='images/mnu_practice.gif';


		document.getElementById('menu_services').src='images/mnu_services.gif';


		document.getElementById('menu_patients').src='images/mnu_patients.gif';


		document.getElementById('menu_physicians').src='images/mnu_physicians.gif';


		document.getElementById('menu_contact').src='images/mnu_contact.gif';


	}