function transparency(element,percentage) {
    var i, count, objStyle, filterValue, opacityValue;
    if(document.getElementById) {
        if(typeof(element)=="object" && element) {
            obj=element;
        }
        else if (document.getElementsByName(element) && document.getElementsByName(element)[0]) {
            obj=document.getElementsByName(element);
        }
        else if (document.getElementById(element)) {
            obj=document.getElementById(element);
        }
        else if (document.getElementsByTagName && document.getElementsByTagName(element) && document.getElementsByTagName(element)[0]) {
            obj=document.getElementsByTagName(element);
        }
        else {
            obj=false;
        }
        
        if(obj) {
            percentage=(typeof(percentage)=="undefined")?50:100-percentage;
            filterValue="Alpha(opacity="+percentage+")";
            opacityValue=""+percentage/100;
            count=(obj.length)?obj.length:1;
            for(i=0;i<count;i++) {
                objStyle=(obj.length)?obj[i].style:obj.style;
                objStyle.filter=filterValue;
                objStyle.MozOpacity=opacityValue;
                objStyle.KhtmlOpacity=opacityValue;
                objStyle.opacity=opacityValue;
            }
        }
    }
}

function checknumber(ele) {
    var e = window.event;
    v = String.fromCharCode(e.keyCode);
    reg = /[^0-9]/g;
    // alert(e.keyCode);

    return !reg.test(v) || e.keyCode == 8 || e.keyCode == 37 || e.keyCode == 39 || e.keyCode == 46 || e.keyCode == 96 || e.keyCode == 97 || e.keyCode == 98 || e.keyCode == 99 || e.keyCode == 100 || e.keyCode == 101 || e.keyCode == 102 || e.keyCode == 103 || e.keyCode == 104 || e.keyCode == 105; // 8 = Backspace, 37 = left, 39 = right, 46 = entf, 96-105 = numlockblock
}