var images = [ // list images
["images/navigation/home1.jpg","images/navigation/home2.jpg","images/navigation/home2.jpg"], // link 1
["images/navigation/hints1.jpg","images/navigation/hints2.jpg","images/navigation/hints2.jpg"], // link 2
["images/navigation/search1.jpg","images/navigation/search2.jpg","images/navigation/search2.jpg"], // link 3
["images/navigation/contact1.jpg","images/navigation/contact2.jpg","images/navigation/contact2.jpg"], // link 4
["images/navigation/tolet1.jpg","images/navigation/tolet2.jpg","images/navigation/tolet2.jpg"], // link 5
["images/navigation/offices1.jpg","images/navigation/offices2.jpg","images/navigation/offices2.jpg"], // link 6
["images/navigation/links1.jpg","images/navigation/links2.jpg","images/navigation/links2.jpg"], // link 7
["images/navigation/clients1.jpg","images/navigation/clients2.jpg","images/navigation/clients2.jpg"] //  no comma at the end of the last index //link 7
]

var preloadImages=new Array() // preloads images
for(var i=0;i<images.length;i++) {
preloadImages[i]=new Array()
for(var j=0;j<images[i].length;j++){
preloadImages[i][j]=new Image()
preloadImages[i][j].src=images[i]
}
}

lastN = ""
lastPic=""

function mOver(obj){
num=obj.name.replace(/[^0-9]/g,"")
if(lastN != obj.name){
document.images[obj.name].src = (images[num].length==3?images[num][2]:images[num][1])
}
}

function mOut(obj){
num=obj.name.replace(/[^0-9]/g,"")
if(lastN != obj.name){
document.images[obj.name].src = images[num][0]
}
}

function mActive(obj){
if(typeof obj!="string"){obj=obj.name}
num=obj.replace(/[^0-9]/g,"")

document.images[obj].src = images[num][1]
if(lastN != ""&&lastN != obj){
document.images[lastN].src = lastPic
}
lastN = obj
lastPic=images[num][0]
}

// add  onload="mActive('img0')" to the opening body tag to highlight starting link, if required