function Is ()
{  //convert all characters to lowercase to simplify testing
   var agt=navigator.userAgent.toLowerCase()

   // *** Browser Version ***
   this.major = parseInt(navigator.appVersion)

   this.nav = ((agt.indexOf('mozilla')!=-1) && ((agt.indexOf('spoofer')==-1) && (agt.indexOf('compatible')==-1)))
   this.nav4 = (this.nav &&(this.major == 4))
   this.nav4up = (this.nav &&(this.major >= 4))

   this.ie = (agt.indexOf("msie")!=-1)
   this.ie4 = (this.nav &&(this.major == 4))
   this.ie4up = (this.nav &&(this.major >= 4))
}

var is = new Is();

function makeItVisible(id,event)
{
   if (is.nav4up) {
      document.layers[id].left = 215;
      document.layers[id].top = 370;
      document.layers[id].visibility="show";
   }
   else {
      document.all[id].style.pixelLeft = 215;
      document.all[id].style.pixelTop = 370;
      document.all[id].style.visibility="visible";
   }
}

function hidePopUp(id)
{
   is.nav4up ? document.layers[id].visibility="hide" : document.all[id].style.visibility="hidden";
}

if (document.images) {	
	sidenav1_n = new Image
	sidenav1_r = new Image
	sidenav2_n = new Image
	sidenav2_r = new Image
	sidenav3_n = new Image
	sidenav3_r = new Image
	sidenav4_n = new Image
	sidenav4_r = new Image
	sidenav5_n = new Image
	sidenav5_r = new Image
	sidenav6_n = new Image
	sidenav6_r = new Image
	sidenav7_n = new Image
	sidenav7_r = new Image
	sidenav8_n = new Image
	sidenav8_r = new Image
	    	
	sidenav1_n.src = 'images/side_nav_1.jpg'
	sidenav1_r.src = 'images/side_nav_1r.jpg'
	sidenav2_n.src = 'images/side_nav_2.jpg'
	sidenav2_r.src = 'images/side_nav_2r.jpg'
	sidenav3_n.src = 'images/side_nav_3.jpg'
	sidenav3_r.src = 'images/side_nav_3r.jpg'
	sidenav4_n.src = 'images/side_nav_4.jpg'
	sidenav4_r.src = 'images/side_nav_4r.jpg'
	sidenav5_n.src = 'images/side_nav_5.jpg'
	sidenav5_r.src = 'images/side_nav_5r.jpg'
	sidenav6_n.src = 'images/side_nav_6.jpg'
	sidenav6_r.src = 'images/side_nav_6r.jpg'
	sidenav7_n.src = 'images/side_nav_7.jpg'
	sidenav7_r.src = 'images/side_nav_7r.jpg'
	sidenav8_n.src = 'images/side_nav_8.jpg'
	sidenav8_r.src = 'images/side_nav_8r.jpg'
    
}
else {
	sidenav1_n = ""
	sidenav1_r = ""
	sidenav2_n = ""
	sidenav2_r = ""
	sidenav3_n = ""
	sidenav3_r = ""
	sidenav4_n = ""
	sidenav4_r = ""
	sidenav5_n = ""
	sidenav5_r = ""
	sidenav6_n = ""
	sidenav6_r = ""
	sidenav7_n = ""
	sidenav7_r = ""
	sidenav8_n = ""
	sidenav8_r = ""
}