function ShowWeb() {
var w = 800;
var h = 800;
var winl = Math.floor((screen.width - w) / 2);
var wint = Math.floor((screen.height - h) / 2);
var cover_win = window.open("https://www.dfrichard.com/echeck/echeck.php", "echeck", "Width="+w+",Height="+h+",Menubar=no,Toolbar=no,Status=no,Scrollbars=yes,location=0,Resizable=no,titlebar=0,Top="+wint+",Left="+winl+"");
}
//<a href=javascript:ShowWeb()>a</a>
function checkNaN(ojbect){
					var inputstring=ojbect.value;
                    var numberstring=" ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
                    var mark=true;
                    var returnstring="";
                    for(var i=0;i<inputstring.length;i++){
                    if(numberstring.indexOf(inputstring.charAt(i))>=0){
                    if(inputstring.charAt(i)=="."&&mark){returnstring=returnstring+inputstring.charAt(i);mark=false}
                    else if(inputstring.charAt(i)!="."){returnstring=returnstring+inputstring.charAt(i);}
                    }
                    }
                    ojbect.value=returnstring;
                    }
					
function checkstr(ojbect){ 
					var inputstring=ojbect.value;
                    var numberstring=" 0123456789-.";
                    var mark=true;
                    var returnstring="";
                    for(var i=0;i<inputstring.length;i++){
                    if(numberstring.indexOf(inputstring.charAt(i))>=0){
                    if(inputstring.charAt(i)=="."&&mark){returnstring=returnstring+inputstring.charAt(i);mark=false}
                    else if(inputstring.charAt(i)!="."){returnstring=returnstring+inputstring.charAt(i);}
                    }
                    }
                    ojbect.value=returnstring;
                    }
					
function checkstr_num(ojbect){
					var inputstring=ojbect.value;
                    var numberstring=" 0123456789-.ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz://";
                    var mark=true;
                    var returnstring="";
                    for(var i=0;i<inputstring.length;i++){
                    if(numberstring.indexOf(inputstring.charAt(i))>=0){
                    	if(inputstring.charAt(i)=="~"&&mark){returnstring=returnstring+inputstring.charAt(i);mark=false
						//alert(inputstring.charAt(i));
						}
                    	else if(inputstring.charAt(i)!="~"){returnstring=returnstring+inputstring.charAt(i);
						//alert(inputstring.charAt(i));
						}
                    }
                    }
                    ojbect.value=returnstring;
                    }