var showImg = "/investor/img/show.gif";
var hideImg = "/investor/img/hide.gif";

function showHideBlock(blockName) {
		var currRow = document.getElementById(blockName);
		 if (currRow.style.display=="none") {
            currRow.style.display="";
			document.getElementById(blockName+"-img").src = hideImg;
        } else {
            currRow.style.display="none";
			document.getElementById(blockName+"-img").src = showImg;
		}
}
/**
 */
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1980;
var maxYear=2100;

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(dtStr){
	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){
		document.getElementById('ErrorDiv').innerHTML = "<ul class=ibm-error><li>The date format should be : mm/dd/yyyy</li></ul>";
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		document.getElementById('ErrorDiv').innerHTML = "<ul class=ibm-error><li>Please enter a valid month</li></ul>";
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		document.getElementById('ErrorDiv').innerHTML = "<ul class=ibm-error><li>Please enter a valid day</li></ul>";
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		document.getElementById('ErrorDiv').innerHTML = "<ul class=ibm-error><li>Please enter a valid 4 digit year between "+minYear+" and "+maxYear+"</li></ul>";
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		document.getElementById('ErrorDiv').innerHTML = "<ul class=ibm-error><li>Please enter a valid date</li></ul>";
		return false
	}
return true
}

function validateDate(){
	var dt=document.frm.date
	if (isDate(dt.value)==false){
		dt.focus()
		return false
	}
    return true
}

function ibmCommonDropdown(selectElementId)	
{
	var elementId = selectElementId;
	var selectElement = document.getElementById(selectElementId);
	var selectedItemIndex = selectElement.options.selectedIndex;
	var selectedItemValue = selectElement.options[selectedItemIndex].value;
	var selectedItemText = selectElement.options[selectedItemIndex].text;		
	switch(elementId)
	{
		case "quarterlyreport" : 														
						var tempPDFPath = "ftp://ftp.software.ibm.com/annualreport/"+selectedItemText+"/"+selectedItemValue+".pdf";
						break;
		case "annualreportyear" :							
						var tempPDFPath = "ftp://ftp.software.ibm.com/annualreport/"+selectedItemText+"/"+selectedItemValue+".pdf";
						break;
		case "secfilingbydate" : 
						var tempPDFPath = "http://www.sec.gov/cgi-bin/browse-edgar?type=&dateb="+selectedItemValue+"/12/31&action=getcompany&CIK=0000051143";
						break;
		case "secfilingbytype" :
						switch(selectedItemValue)
						{
							case "10K" : var tempPDFPath = "http://www.sec.gov/cgi-bin/browse-edgar?type=10-k&dateb=&action=getcompany&CIK=0000051143";
										 break;
							case "10Q" : var tempPDFPath = "http://www.sec.gov/cgi-bin/browse-edgar?type=10-q&dateb=&action=getcompany&CIK=0000051143";
										 break;
							case "8K" : var tempPDFPath = "http://www.sec.gov/cgi-bin/browse-edgar?type=8-k&dateb=&action=getcompany&CIK=0000051143";
										break;
							case "Section16" : var tempPDFPath = "http://www.sec.gov/cgi-bin/browse-edgar?company=&CIK=0000051143&owner=only&action=getcompany";
											   break;
							case "ProxyStatements" : var tempPDFPath = "http://www.sec.gov/cgi-bin/browse-edgar?type=def&dateb=&action=getcompany&CIK=0000051143";
													 break;
						}
	}
	window.open(tempPDFPath);
}