// JScript File
var minYear=1900;
var maxYear=2100;
var dtCh= "/";

function dKU(ev,t){
	if(ev==null) ev=window.event;
	e=ev.keyCode;
    if(e==84)
    {
        //t.value='<%=Utils.TodaysDate() %>';
        t.value=getTDate();
        return;    
    }
    else if(e==89){ //y
        //var y=new Date('<%=Utils.TodaysDate() %>');
        var y=new Date(getTDate());
        if(y.getFullYear()<1950) y.setFullYear(y.getFullYear()+100);
        y.setDate(y.getDate()-1);
        t.value=y.getMonth()+1 + "/" + y.getDate() + "/" + y.getFullYear();;
    }	
    if(e==111 
    || e==191 
    || (e>95 && e<106) 
    || (e>47 && e<58)
    ){
	    t.value=t.value.replace(/ /gi,'');
	    t.value=t.value.replace('//','/');
		
	    ds=t.value.split('/');
	    for(var i=0;i<ds.length;i++){
		    if(isNaN(ds[i])) return;
	    }		
	    if(ds.length==1){
		    if((e>97 && e<106) || (e>49 && e<58) || ds[0].length==2){
			    if(ds[0]<13) t.value+="/";
		    }
	    }
	    else if(ds.length==2 || (ds.length==3 && (e==111 || e==191))){
		    if((e>99 && e<106) || (e>51 && e<58)  || ds[1].length==2 || (e==111 || e==191)){
			    var dt=new Date();
			    var t2=new Date();
			    if(ds[1]<32 && ds[1]!=""){
				    t2.setFullYear(dt.getFullYear(),ds[0]-1,ds[1]);
				    //if(t2<dt) t2.setFullYear(dt.getFullYear()+1,ds[0]-1,ds[1]);
				    t.value=t2.getMonth()+1 + "/" + t2.getDate() + "/" + t2.getFullYear();
					
			    }
		    }
	    }
    }
}    
function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}
function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}
function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}
function isDate(dtObj){
    var dtStr = dtObj.value;
    if(dtStr=="")return true;
	var daysInMonth = DaysArray(12);
	var pos1=dtStr.indexOf(dtCh);
	var pos2=dtStr.indexOf(dtCh,pos1+1);
	var strMonth=dtStr.substring(0,pos1);
	var strDay=dtStr.substring(pos1+1,pos2);
	var strYear=dtStr.substring(pos2+1);
	strYr=strYear;
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1);
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1);
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1);
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm/dd/yyyy")
		dtObj.focus();
		dtObj.select();
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		dtObj.focus();
		dtObj.select();
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		dtObj.focus();
		dtObj.select();
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		dtObj.focus();
		dtObj.select();
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		dtObj.focus();
		dtObj.select();
		return false
	}
    return true 
}