//----------------------------------------------------------------------------------
function so_clearInnerHTML(obj) {
	// perform a shallow clone on obj
	nObj = obj.cloneNode(false);
	// insert the cloned object into the DOM before the original one
	obj.parentNode.insertBefore(nObj,obj);
	// remove the original object
	obj.parentNode.removeChild(obj);
}
//----------------------------------------------------------------------------------
function isset () {
    // *     example 1: isset( undefined, true);
    // *     returns 1: false    // *     example 2: isset( 'Kevin van Zonneveld' );
    // *     returns 2: true
    
    var a=arguments, l=a.length, i=0;
        if (l===0) {
        throw new Error('Empty isset'); 
    }   
    while (i!==l) {        if (typeof(a[i])=='undefined' || a[i]===null) { 
            return false; 
        } else { 
            i++; 
        }    }
    return true;
}

//----------------------------------------------------------------------------------
function img_create(src, alt, title) {
    var img= IEWIN? new Image() : document.createElement('img');
    img.src= src;
    if (alt!=null) img.alt= alt;
    if (title!=null) img.title= title;
    return img;
}