// display decision alert box
function decision(message, url){
	if(confirm(message)) location.href = url;
}

// open browser window
function openPopUp(url, windowName, w, h, scrollbar) {

		var winl = (screen.width - w) / 2;
		var wint = (screen.height - h) / 2;
		winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scrollbar ;
			win = window.open(url, windowName, winprops);
		if (parseInt(navigator.appVersion) >= 4) { 
			win.window.focus(); 
		} 
}

function jumpMenu(target,object,restore){ 
  eval(target+".location='"+object.options[object.selectedIndex].value+"'");
  if (restore) object.selectedIndex=0;
}

function findObj(n, d) {
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
	 d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function getImage(imageName)
{
		findObj('img').src = imageName;
}

function submitDoc(formName) { 
  var obj;
 
	if (obj=findObj(formName)!=null) 
	{
		findObj(formName).submit(); 
	}
	else 
	{
		alert('The form you are attempting to submit called \'' + formName + '\' couldn\'t be found. Please make sure the submitDoc function has the correct id and name.');
	}

}

function pop_open(id) {
	sURL = "popwindow.php?id=" + id;
	window.open(sURL, 'popup', 'height=450,width=400,location=no,menubar=no,resizable=no,status=no,titlebar=no,toolbar=no,scrollbars=yes');


}

/*	This script and many more are available free online at
	The JavaScript Source!! http://javascript.internet.com
	Created by: David Leppek :: https://www.azcode.com/Mod10
	
	Basically, the alorithum takes each digit, from right to left and muliplies each second
	digit by two. If the multiple is two-digits long (i.e.: 6 * 2 = 12) the two digits of
	the multiple are then added together for a new number (1 + 2 = 3). You then add up the
	string of numbers, both unaltered and new values and get a total sum. This sum is then
	divided by 10 and the remainder should be zero if it is a valid credit card. Hense the
	name Mod 10 or Modulus 10.
*/


function Mod10(ccNumb) {  // v2.0

	var valid = "0123456789"  // Valid digits in a credit card number
	var len = ccNumb.length;  // The length of the submitted cc number
	var iCCN = parseInt(ccNumb);  // integer of ccNumb
	var sCCN = ccNumb.toString();  // string of ccNumb
	sCCN = sCCN.replace (/^\s+|\s+$/g,'');  // strip spaces
	var iTotal = 0;  // integer total set at zero
	var bNum = true;  // by default assume it is a number
	var bResult = false;  // by default assume it is NOT a valid cc
	var temp;  // temp variable for parsing string
	var calc;  // used for calculation of each digit

	// Determine if the ccNumb is in fact all numbers
	for (var j=0; j<len; j++) {
		temp = "" + sCCN.substring(j, j+1);
		if (valid.indexOf(temp) == "-1"){bNum = false;}
	}

	// if it is NOT a number, you can either alert to the fact, or just pass a failure
	if(!bNum){
	/*alert("Not a Number");*/bResult = false;
	}

	// Determine if it is the proper length
	if((len == 0)&&(bResult)){  // nothing, field is blank AND passed above # check
		bResult = false;
	} else{  // ccNumb is a number and the proper length - let's see if it is a valid card number
		if(len >= 15){  // 15 or 16 for Amex or V/MC
		for(var i=len;i>0;i--){  // LOOP throught the digits of the card
			calc = parseInt(iCCN) % 10;  // right most digit
			calc = parseInt(calc);  // assure it is an integer
			iTotal += calc;  // running total of the card number as we loop - Do Nothing to first digit
			i--;  // decrement the count - move to the next digit in the card
			iCCN = iCCN / 10;				 // subtracts right most digit from ccNumb
			calc = parseInt(iCCN) % 10 ;	 // NEXT right most digit
			calc = calc *2;				 // multiply the digit by two
			// Instead of some screwy method of converting 16 to a string and then parsing 1 and 6 and then adding them to make 7,
			// I use a simple switch statement to change the value of calc2 to 7 if 16 is the multiple.
			switch(calc){
				case 10: calc = 1; break;	//5*2=10 & 1+0 = 1
				case 12: calc = 3; break;	//6*2=12 & 1+2 = 3
				case 14: calc = 5; break;	//7*2=14 & 1+4 = 5
				case 16: calc = 7; break;	//8*2=16 & 1+6 = 7
				case 18: calc = 9; break;	//9*2=18 & 1+8 = 9
				default: calc = calc;		//4*2= 8 &   8 = 8  -same for all lower numbers
			}
			iCCN = iCCN / 10;  // subtracts right most digit from ccNum
			iTotal += calc;  // running total of the card number as we loop
			}  // END OF LOOP
			if ((iTotal%10)==0){  // check to see if the sum Mod 10 is zero
			bResult = true;  // This IS (or could be) a valid credit card number.
			} else {
			bResult = false;  // This could NOT be a valid credit card number
		}
		}
	}
	// change alert to on-page display or other indication as needed.

	if(bResult) {
		// alert("This IS a valid Credit Card Number!");
	}
	if(!bResult){
		alert("This is NOT a valid Credit Card Number!");
	}
	return bResult; // Return the results
}