function imageOver(refobj) {        
    var imageName=refobj.src
    var imagePosition=imageName.split('/').length -1
        imageName=imageName.split('/')[imagePosition]
        imageName=imageName.substr(0,imageName.length -4)
        imageName=imageName + '_over.jpg'
    var fullImagePath = imagePath + imageName
        refobj.src= fullImagePath
}

function imageOut(refobj) {
    var imageName=refobj.src
    var imagePosition=imageName.split('/').length -1
        imageName=imageName.split('/')[imagePosition]
        imageName=imageName.substr(0,imageName.length -9)
        imageName=imageName + '.jpg'
    var fullImagePath = imagePath + imageName
        refobj.src= fullImagePath
}