function setButtonPos(){
    var imgHt = document.getElementById('progModule_sidebar_image').height /2 + 30; 
    var imgMn = "-"+ imgHt +"px 0 0 85px";
    document.getElementById('playThis').style.margin = imgMn;
    if(navigator.userAgent.toLowerCase().indexOf('msie')>0){ 
        is = document.getElementById('playThis'); 
        is.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+is.src+"', sizingMethod='scale')"; 
        is.src = "/images/transparent1x1.gif"; 
    }
}