URL = window.location.href; 
indexhtml = (URL.indexOf('index.') > -1); 
abouthtml = (URL.indexOf('about.') > -1); 
contacthtml = (URL.indexOf('contact.') > -1);
pricelisthtml = (URL.indexOf('pricelist.') > -1); 
requesthtml = (URL.indexOf('request.') > -1);  

emergency_repairhtml = (URL.indexOf('emergency_repair.') > -1); 
chlorine_removalhtml = (URL.indexOf('chlorine_removal.') > -1); 
diffusershtml = (URL.indexOf('diffusers.') > -1); 
chlorine_cylinderhtml = (URL.indexOf('chlorine_cylinder.') > -1);
lifting_barshtml = (URL.indexOf('lifting_bars.') > -1); 
scaleshtml = (URL.indexOf('scales.') > -1);  

window.onload = function navigations(){ 
if (indexhtml) { 
var x=document.getElementById("home"); 
x.className = 'highlight_class'; 
} 

else if (abouthtml){ 
var x=document.getElementById("about"); 
x.className = 'highlight_class'; 
} 

else if (contacthtml){ 
var x=document.getElementById("contact"); 
x.className = 'highlight_class'; 
} 

else if (pricelisthtml){ 
var x=document.getElementById("pricelist"); 
x.className = 'highlight_class'; 
} 

else if (requesthtml){ 
var x=document.getElementById("request"); 
x.className = 'highlight_class'; 
} 

else if (emergency_repairhtml){ 
var x=document.getElementById("emergency_repair"); 
x.className = 'highlight_class'; 
} 

else if (chlorine_removalhtml){ 
var x=document.getElementById("chlorine_removal"); 
x.className = 'highlight_class'; 
} 

else if (diffusershtml){ 
var x=document.getElementById("diffusers"); 
x.className = 'highlight_class'; 
} 

else if (chlorine_cylinderhtml){ 
var x=document.getElementById("chlorine_cylinder"); 
x.className = 'highlight_class'; 
} 

else if (lifting_barshtml){ 
var x=document.getElementById("lifting_bars"); 
x.className = 'highlight_class'; 
} 

else if (scaleshtml){ 
var x=document.getElementById("scales"); 
x.className = 'highlight_class'; 
} 

} 

// Start of dropdown menu

var disappeardelay=250;  
var enableanchorlink=0; 
var hidemenu_onclick=1; 

var ie5=document.all;
var ns6=document.getElementById&&!document.all;

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}

function showhide(obj, e, visible, hidden){
if (ie5||ns6)
dropmenuobj.style.left=dropmenuobj.style.top=-500
if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
obj.visibility=visible
else if (e.type=="click")
obj.visibility=hidden
}

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie5 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
}
else{
var topedge=ie5 && !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie5 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ 
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) 
edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
}
}
return edgeoffset
}

function dropdownmenu(obj, e, dropmenuID){
if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
if (typeof dropmenuobj!="undefined") 
dropmenuobj.style.visibility="hidden"
clearhidemenu()
if (ie5||ns6){
obj.onmouseout=delayhidemenu
dropmenuobj=document.getElementById(dropmenuID)
if (hidemenu_onclick) dropmenuobj.onclick=function(){dropmenuobj.style.visibility='hidden'}
dropmenuobj.onmouseover=clearhidemenu
dropmenuobj.onmouseout=ie5? function(){ dynamichide(event)} : function(event){ dynamichide(event)}
showhide(dropmenuobj.style, e, "visible", "hidden")
dropmenuobj.x=getposOffset(obj, "left")
dropmenuobj.y=getposOffset(obj, "top")
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
}
return clickreturnvalue()
}

function clickreturnvalue(){
if ((ie5||ns6) && !enableanchorlink) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie5&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function delayhidemenu(){
delayhide=setTimeout("dropmenuobj.style.visibility='hidden'",disappeardelay)
}

function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)
}