function rollover_init()
	{
	var arr_elem = new Array();
	var tmp_elm;
	var att = "";
	
	arr_elem = document.getElementsByTagName("img");
	
	for (var i = 0;i < arr_elem.length;i++)
		{tmp_elm = arr_elem[i];
		att = tmp_elm.getAttribute("rollsrc");
		if(att)
			{tmp_elm.onmouseover = function() {rollover_event(this);}
			tmp_elm.onmouseout = function() {rollover_event(this);}
			rollover_preload([att]);
			}
		}
	}

function rollover_event(obj)
	{
	var att1 = "";
	var att2 = "";
	
	att1 = obj.getAttribute("src");
	att2 = obj.getAttribute("rollsrc");
	
	obj.setAttribute('src',String(att2));
	obj.setAttribute('rollsrc',String(att1));
	}


function rollover_preload(img_arr)
	{var tmp_img_obj = new Array();
	for (var i = 0;i < img_arr.length;i++)
		{tmp_img_obj[i] = new Image();
		tmp_img_obj[i].src = img_arr[i];
		}
	}

function image_change(obj,new_image)
	{obj.src=new_image;}