//-----------------------------------------------------------------------------
// top mast image rotation
//-----------------------------------------------------------------------------

	var myPictures = new Array();
	var indx = 0;
	var timeDelay=5000;
	if(document.images){
		
		myPictures[0]=new Image();
		myPictures[0].src="images_new/mast_bkgd1.jpg";
		myPictures[1]=new Image();
		myPictures[1].src="images_new/mast_bkgd1.jpg";
		myPictures[2]=new Image();
		myPictures[2].src="images_new/mast_bkgd_dental.jpg";
		myPictures[3]=new Image();
		myPictures[3].src="images_new/mast_bkgd_pedi.jpg";		
		myPictures[4]=new Image();
		myPictures[4].src="images_new/mast_bkgd_fammed.jpg";
		myPictures[5]=new Image();
		myPictures[5].src="images_new/mast_bkgd_womens.jpg ";
		myPictures[6]=new Image();
		myPictures[6].src="images_new/mast_bkgd_mens.jpg"

	}
	function changePictures(){
		var size= myPictures.length - 1;
		if( indx < size ) {
			indx++;
		}
		else {
			indx = 0;
	}
	document.mainpix.src= myPictures[indx].src;
	timeout=setTimeout('changePictures()', timeDelay);
	}
	function stopShow(){
		clearTimeout(timeout);
	}