function switch_image(image){
if(image != "[object HTMLImageElement]")
{
	
	image = document.getElementById(image);
	
}
var source = image.src.split('/').reverse();

switch(source[0]){
case 'aie_grey.jpg':

image.src = 'images/aie_grey_active.jpg';
break;

case 'seminars_grey.jpg':
image.src = 'images/seminars_grey_active.jpg';
break;

case 'carbon_grey.jpg':
image.src = 'images/carbon_grey_active.jpg';
break;

case 'home.jpg':
image.src = 'images/home_active.jpg';
break;

case 'about.jpg':
image.src = 'images/about_active.jpg';
break;

case 'contact.jpg':
image.src = 'images/contact_active.jpg';
break;


}

}

function revert_image(image)
{
	if(image != "[object HTMLImageElement]")
	{
		
		image = document.getElementById(image);
		
	}
	var source = image.src.split('/').reverse();
	switch(source[0])
	{
	case 'aie_grey_active.jpg':
	image.src = 'images/aie_grey.jpg';
	break;
	
	case 'seminars_grey_active.jpg':
	image.src = 'images/seminars_grey.jpg';
	break;
	
	case 'carbon_grey_active.jpg':
	image.src = 'images/carbon_grey.jpg';
	break;
	
	case 'home_active.jpg':
	image.src = 'images/home.jpg';
	break;
	
	case 'about_active.jpg':
	image.src = 'images/about.jpg';
	break;
	
	case 'contact_active.jpg':
	image.src = 'images/contact.jpg';
	break;
	}
}


function expandImage(image){
	image = document.getElementById(image);
	image.style.position='absolute'
	image.style.zIndex = 500;
	image.style.width = 600+'px';
	image.style.height = 150+'px';
	image.style.marginTop=-45+'px';
	
	//image.style.marginBottom= 120+'px';
	
}

function reduceImage(image){
	image = document.getElementById(image);
	image.style.position='relative';
	image.style.zIndex = 0;
	image.style.width = 244+'px';
	image.style.height = 50+'px';
	image.style.marginTop=0+'px';

	//image.style.marginBottom=0+'px';
}
// JavaScript Document