function preloadIMG()
{
    if (document.images)
    {
		preload_image_object = new Image();
		// set image url
		image_url = new Array();
		image_url[0] = "images/rating1a.gif";
		image_url[1] = "images/rating2a.gif";
		image_url[2] = "images/rating3a.gif";
		image_url[3] = "images/rating4a.gif";
		image_url[4] = "images/rating5a.gif";

		var i = 0;
		for( i=0; i <= 4; i++ ) 
		{
			preload_image_object.src = image_url[i];
		}
    }   
}


function maxLength1(o,v,m){
	if(o.value.length>m){
	  document.getElementById(v).innerHTML=
	    ((o.value=o.value.substr(0,m)).length);
    }
    else{
    document.getElementById(v).innerHTML=o.value.length;
    }
}

function show(what){
	document.getElementById(what).style.display = "block";
}

function hide(what){
	document.getElementById(what).style.display = "none";
}

function check_show(value,box1,box2){
	if(value == 0){
	document.getElementById(box1).style.visibility = "visible";
	document.getElementById(box1).style.display = "block";
	document.getElementById(box2).style.visibility = "visible";
	document.getElementById(box2).style.display = "block";
	}
	else{
	document.getElementById(box1).style.visibility = "hidden";
	document.getElementById(box1).style.display = "none";
	document.getElementById(box2).style.visibility = "hidden";
	document.getElementById(box2).style.display = "none";	
	}
}
function showHide(value,what){
	if(value != 0){
	document.getElementById(what).style.display = "none";
	}
	else{
	document.getElementById(what).style.display = "block";
	}
}

function EmptyMail(){
	if(document.form.mail.value != ''){
	document.form.mail.value = '';
	}
}

function question(msg, link)
{
    var answer = confirm( msg )
    if (answer)
    {
        window.location = link;
    }
}

function changeRating(what,source){
	if(what == 1)
	document.getElementById('rating'+source).src = 'images/rating'+source+'a.gif';
	else
	document.getElementById('rating'+source).src = 'images/rating'+source+'.gif';
}