function changeImage(img_name,img_src) {
document[img_name].src=img_src;
}

function ChangeStyle(eid)
{
	document.cat3.all.style.fontSize = "14pt";
  //document.getElementById(eid).style.fontSize = "14pt";
  document.getElementById(eid).style.fontWeight = "bold";
  //document.getElementById("MyTag").style.color = "red";
}


function opacity() { 
    //speed for each frame 
    var millisec=7000;
	var speed = Math.round(millisec / 100); 
    var timer = 0; 
	var id='fadeImg';
    //determine the direction for the blending, if start and end are the same nothing happens 
        for(i = 100; i >= 0; i--) { 
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed)); 
            timer++; 
        } 
} 

//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 + ")"; 
}