//change the opacity for different browsers
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}


function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = imagefile;

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function generate_rand_nr(min_nr,max_nr) {
	var rand_nr = Math.floor(min_nr+(max_nr-min_nr+1)*(Math.random()));
	return rand_nr;
}

function toggle_element(element,src_element_for_img){
		var up_img,down_img;
		
		up_img = 'images/arrow_up.png';
		down_img = 'images/arrow_down.png';
		var image = src_element_for_img.getElementsByTagName('img')[0];
		if (image.src = image.src.match(up_img)){
			image.src = down_img;
			document.cookie = "addit_links_toggle=down";
		}else{
			image.src = up_img;
			document.cookie = "addit_links_toggle=up";
		}
		Effect.toggle(element,'slide');
		return true;
	}