// showhide
function showhide(x) {
	document.getElementById(x).style.display = (document.getElementById(x).style.display=='block') ? 'none' : 'block';
}
function justshow(x) {
	document.getElementById(x).style.display = 'block';
}
function justhide(x) {
	document.getElementById(x).style.display = 'none';
}

// image resizing
function calculateWidth(w,h,Directory,file){
	var nh = document.getElementById('new_'+file+'_height_'+Directory).value;
	var nw = Math.round(w * nh / h);
	document.getElementById('new_'+file+'_width_'+Directory).value = nw;
}
function calculateHeight(w,h,Directory,file){
	var nw = document.getElementById('new_'+file+'_width_'+Directory).value;
	var nh = Math.round(h * nw / w);
	document.getElementById('new_'+file+'_height_'+Directory).value = nh;
}

// confirm deletions
function confirmDelete(){
	if (confirm("Are you sure you want to delete this record?"))
		return true ;
	else
		return false ;
}

// table highlighting
function HILITE() {
if (document.getElementById && document.createTextNode) {
		var myTABLE = document.getElementsByTagName("table");
		for (var i=0; i<myTABLE.length; i++) {
			var myROW = myTABLE[i].getElementsByTagName("tr");
			for (var j=1; j<myROW.length; j++) {
				var myClass;
				myROW[j].onmouseover = function(){
					myClass = this.className;
					this.className = 'colorme';
					return false;
				}
				myROW[j].onmouseout  = function(){
					this.className = myClass;
					return false;
				}
			}
		}
	}
}