function showTip(e,tipcont) {

	var scrOfY = 0;
  if( typeof( window.pageYOffset ) == 'number' ) {
    //Netscape compliant
    scrOfY = window.pageYOffset;
  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
    //DOM compliant
    scrOfY = document.body.scrollTop;
  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
    scrOfY = document.documentElement.scrollTop;
  }
 
  var x = 0,y = 0,obj;
		if(!e) e = event;
    var b = document.body;
    x = e.clientX + b.scrollLeft;
    y = e.clientY + scrOfY;
		
	 obj = document.getElementById('tiper');
	 obj.style.left= (x+15)+'px';
	 obj.style.top= (y+15)+'px';
	 obj.innerHTML=tipcont;
	 obj.style.display = 'block';
	
}



function hideTip() {
 	var obj = document.getElementById('tiper');
	 obj.style.left= '0px';
	 obj.style.top= '0px';
	 obj.innerHTML='';
	 obj.style.display = 'none';
}


function checkfield(field){
	var obj = document.getElementById(field);
	if(obj.checked == false) obj.checked=true;
	else obj.checked = true;
}

function uncheck(field){
	var obj = document.getElementById(field);
	if(obj.checked == false);
	else obj.checked = false;
}