// set up browser-dependent variables

if (document.all)    {nn=0;ie=1;dom=0;fShow="visible";fHide="hidden";}
if (document.layers) {nn=1;ie=0;dom=0;fShow="show";fHide="hide";}
if (document.getElementById) {
	nn=0;
	ie=0;
	dom=1;
	fShow="visible";
	fHide="hidden";
}
current="";
previous="";
anch="";

fader = new Array();

function loLite() {
	if (previous) {
	out = eval(previous+"0");
	document.getElementById(previous).src = out.src;
	anch.className = "lo";
	// use fadomatic to hide sublayer
	fader[previous].hide();
	} // if
}

function hiLite(item,obj) {
	current = item;
	anch = obj;
	over = eval(current+"1");
	document.getElementById(current).src = over.src;
	anch.className = "hi";
	sublayer = document.getElementById(current+"sub");
	sublayer.style.visibility = "visible";
	
	 // New fadomatic instance, with initial 
   // opacity set to transparent
    if (!fader[current]) {
		 fader[current] = new Fadomatic(sublayer, 10, 0);
    }
    fader[current].fadeIn();
}

function setPrevious(prev) {
	previous = prev;
}

// this global variable keeps track of which nav item is currently moused over
var theMouseItem = "null";
// hilite and lolite TD for nav items
function hiLiteNavTD(cell) {
      if (ie) {
         thisObj = eval("document.all." + cell + ".style");
      }
      if (nn) {
        thisObj = eval("document.layers." + cell + ".style");
      }
      if (dom) {
         thisObj = eval("document.getElementById('" + cell + "').style");
      }      
      thisObj.background="#333333";
      }
      
function loLiteNavTD(cell) {
      if (ie) {
         thisObj = eval("document.all." + cell + ".style");
      }
      if (nn) {
        thisObj = eval("document.layers." + cell + ".style");
      }
      if (dom) {
         thisObj = eval("document.getElementById('" + cell + "').style");
      }
      thisObj.background="#7f7f7f";
      }


// script for spawning new window

function openWindow(page,windowName,width,height,tools) {

	if (tools != 1) {
			showTools = ",toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes";
		} else {
			showTools = ",resizable=yes,toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes,scrollbars=yes";
		} 
    
    if(!width) {
    	width = 640;
    }
    
    if(!height) {
    	height = 480;
    }

    myWin = window.open(page,'windowName','width=' + width + ',height=' + height + showTools);
    
	// if window has already been opened and is behind main window,
	// bring to front
	if (!myWin.focus()) {
		myWin.focus();
	}
	
}


///////////////////////
// DHTML animation scripts here
///////////////////////

// variables determined in other js files:
// for inside pages, shiftTop resets the top of the layer above the top of the page,
// so it drops down.
// for home page, shiftTop is used as the destination for layers


// arg direction determines whether subnav is on home or inside

function moveLayer(layerName,items) {

	shiftTop = 0 - (12 + (items*15));
	newTop = 23;
	
	if (page == "home") {
				shiftTop+=120;
				newTop+=138;
			}
			
	if (ie) {
			
			theLayer = document.all[layerName];
			theLayer.style.pixelTop = 23 + shiftTop;
			theLayer.style.visibility = fShow;
			dec = 4; // decrement by
			moveMe(theLayer,dec);
	}	
	if (nn) {
			theLayer = document.layers[layerName];
			theLayer.left = theLayer.left - 6;
			theLayer.top = 19 + shiftTop;
			theLayer.visibility = fShow;
			dec = 4; // decrement by
			moveMe(theLayer,dec);
	}	
	if (dom) {
			
			theLayer = document.getElementById(layerName);
			topper = 23 + shiftTop;
			theLayer.style.top = topper + "px";
			theLayer.style.visibility = fShow;
			dec = 4; // decrement by
			moveMe(theLayer,dec);
	}
}

function moveMe(theLayer,dec) {

	if (ie) {
		if (newTop > theLayer.style.pixelTop + dec) {
			theLayer.style.pixelTop += dec;
			setTimeout("moveMe(theLayer,dec)", 2);
		}
	}
		
	if (nn) {
		if (newTop > theLayer.top + dec) {
			theLayer.top += dec;
			setTimeout("moveMe(theLayer,dec)", 2);
		}
	}
	
	if (dom) {
		if (newTop >= topper + dec) {
			topper += dec;
			theLayer.style.top = topper + "px";
			setTimeout("moveMe(theLayer,dec)", 2);
		} else {
			theLayer.style.top = newTop + "px";
		}
	}
	
}