if (document.images) {
   var pum1 = new Image();
   pum1.src = "images/MeterMixHeaderRev85-UP.jpg";
   var pum2 = new Image();
   pum2.src = "images/MeterMixHeaderRev85-DN.jpg";
   var tech1 = new Image();
   tech1.src = "images/flavour_b2-red.jpg";
   var tech2 = new Image();
   tech2.src = "images/flavour_b2-green.jpg";
   var valves1 = new Image();
   valves1.src = "images/FluidDispenseHeaderRev80-UP.jpg";
   var valves2 = new Image();
   valves2.src = "images/FluidDispenseHeaderRev80-DN.jpg";
   var vquote1 = new Image();
   vquote1.src = "images/flavour_b2-red.jpg";
   var vquote2 = new Image();
   vquote2.src = "images/flavour_b2-green.jpg";
   var mquote1 = new Image();
   mquote1.src = "images/flavour_b1-red.jpg";
   var mquote2 = new Image();
   mquote2.src = "images/flavour_b1-green.jpg";

}
function show_rock(which) {
	if (document.images) {
		document[which].src = pum2.src;
	}
}
function hide_rock(which) {
	if (document.images) {
		document[which].src = pum1.src;
	}
}	

function show_rock1(which) {
	if (document.images) {
		document[which].src = valves2.src;
	}
}
function hide_rock1(which) {
	if (document.images) {
		document[which].src = valves1.src;
	}
}	

function show_rock2(which) {
	if (document.images) {
		document[which].src = vquote2.src;
	}
}
function hide_rock2(which) {
	if (document.images) {
		document[which].src = vquote1.src;
	}
}

function show_rock3(which) {
	if (document.images) {
		document[which].src = mquote2.src;
	}
}
function hide_rock3(which) {
	if (document.images) {
		document[which].src = mquote1.src;
	}
}

function techsheetup(which) {
     if (document.images) {
          document[which].src = tech1.src;
         }
}

function techsheetdn(which) {
     if (document.images) {
          document[which].src = tech2.src;
         }
}

function FP_swapImgRestore() {//v1.0
 var doc=document,i; if(doc.$imgSwaps) { for(i=0;i<doc.$imgSwaps.length;i++) {
  var elm=doc.$imgSwaps[i]; if(elm) { elm.src=elm.$src; elm.$src=null; } } 
  doc.$imgSwaps=null; }
}

function FP_swapImg() {//v1.0
 var doc=document,args=arguments,elm,n; doc.$imgSwaps=new Array(); for(n=2; n<args.length;
 n+=2) { elm=FP_getObjectByID(args[n]); if(elm) { doc.$imgSwaps[doc.$imgSwaps.length]=elm;
 elm.$src=elm.src; elm.src=args[n+1]; } }
}

function FP_preloadImgs() {//v1.0
 var d=document,a=arguments; if(!d.FP_imgs) d.FP_imgs=new Array();
 for(var i=0; i<a.length; i++) { d.FP_imgs[i]=new Image; d.FP_imgs[i].src=a[i]; }
}

function FP_getObjectByID(id,o) {//v1.0
 var c,el,els,f,m,n; if(!o)o=document; if(o.getElementById) el=o.getElementById(id);
 else if(o.layers) c=o.layers; else if(o.all) el=o.all[id]; if(el) return el;
 if(o.id==id || o.name==id) return o; if(o.childNodes) c=o.childNodes; if(c)
 for(n=0; n<c.length; n++) { el=FP_getObjectByID(id,c[n]); if(el) return el; }
 f=o.forms; if(f) for(n=0; n<f.length; n++) { els=f[n].elements;
 for(m=0; m<els.length; m++){ el=FP_getObjectByID(id,els[n]); if(el) return el; } }
 return null;
}