// Show Categories
function ShowPort(cat) {
    
    if(cat=="tourism") {
        document.getElementById("tourism").style.display = "block";
        document.getElementById("li_tourism").className='current';
        
        document.getElementById("companies").style.display = "none";
        document.getElementById("li_companies").className='nocurrent';
        
        document.getElementById("informative").style.display = "none";
        document.getElementById("li_informative").className='nocurrent';
        
        document.getElementById("entertainment").style.display = "none";
        document.getElementById("li_entertainment").className='nocurrent';
    }
    else if(cat=="companies") {
        document.getElementById("tourism").style.display = "none";
        document.getElementById("li_tourism").className='nocurrent';
        
        document.getElementById("companies").style.display = "block";
        document.getElementById("li_companies").className='current';
        
        document.getElementById("informative").style.display = "none";
        document.getElementById("li_informative").className='nocurrent';
        
        document.getElementById("entertainment").style.display = "none";
        document.getElementById("li_entertainment").className='nocurrent';
    }
    else if(cat=="informative") {
        document.getElementById("tourism").style.display = "none";
        document.getElementById("li_tourism").className='nocurrent';
        
        document.getElementById("companies").style.display = "none";
        document.getElementById("li_companies").className='nocurrent';
        
        document.getElementById("informative").style.display = "block";
        document.getElementById("li_informative").className='current';
        
        document.getElementById("entertainment").style.display = "none";
        document.getElementById("li_entertainment").className='nocurrent';
    }
    else if(cat=="entertainment") {
        document.getElementById("tourism").style.display = "none";
        document.getElementById("li_tourism").className='nocurrent';
        
        document.getElementById("companies").style.display = "none";
        document.getElementById("li_companies").className='nocurrent';
        
        document.getElementById("informative").style.display = "none";
        document.getElementById("li_informative").className='nocurrent';
        
        document.getElementById("entertainment").style.display = "block";
        document.getElementById("li_entertainment").className='current';
    }
    
    
}


// Opacity Onmouseover Images
function AlphaImage(who,state) {
	if(state=="on"){
		who.style.filter = 'alpha(opacity=50)';	
		who.style.opacity = 0.5;
	}
	else{
		who.style.filter = 'alpha(opacity=100)';
		who.style.opacity = 1;	
	}
}