function OW(page,a,b){
X=(screen.width-a)/2;
Y=(screen.height-b)/2;
var winO=window.open(page,'popup','scrollbars=2,addressbar=0,width='+a+',height='+b+',left='+X+',top='+Y);winO.focus();
}
function ShowLoading()
{
 document.getElementById('connecting').style.display="block";
}
function ShowConnection(id)
{
 document.getElementById(id).innerHTML="<img src=\"../images/icons/connecting.gif\" />";

}
function HideLoading()
{
 document.getElementById('connecting').style.display="none";
 }

	function isValidPrice(value) { 
    if (value=="") return false; 
    var validChars = "0123456789.,"; 
    var isNumber=true; 
    var charact; 
    for (i = 0; i < value.length && isNumber == true; i++) { 
      charact = value.charAt(i); 
      if (validChars.indexOf(charact) == -1) { 
         isNumber = false; 
      } 
    } 
    return isNumber; 
	}