//Created by Tittle Joseph, TittleJoseph
//     @yahoo.com, jtittle@pisoftek.com, India
//Do not modify any content without perm
//     ission of author
//Change or Replace a querystring value 
//     from a action 
//Eg alert('x.asp?Name=Joe+Jose&Age=25&C
//     lass=IVth'+'\n\n'+ChangeQueryStringValue
//     ('x.asp?Name=Joe+Jose&Age=25&Class=IVth'
//     ,'Name','Peter Paul'));
//Eg alert('x.asp?Age=25&Name=Joseph+Joh
//     n&Class=IVth'+'\n\n'+ChangeQueryStringVa
//     lue('x.asp?Age=25&Name=Peter+Paul&Class=
//     IVth','Name','Peter Paul'));
//Eg alert('x.asp'+'\n\n'+ChangeQueryStr
//     ingValue('x.asp','Name','Peter Paul'));
//Eg alert(location.href+'\n\n'+ChangeQu
//     eryStringValue(location.href,'MoveTo','X
//     .asp'));
function ChangeQueryStringValue(action,qsname,qsvalue)


    {
    	if (action.indexOf('?') == -1 )	 //If no querystring present
    		return (action+"?"+qsname+"="+UrlEncode(qsvalue)); //x.asp?Name=Peter+Paul
    	else
    	{		
    		if ( (action.indexOf("?"+qsname+"=") == -1 ) && (action.indexOf("&"+qsname+"=") == -1 ) ) //Passed querystring not already present		


        		{
        			return (action+"&"+qsname+"="+UrlEncode(qsvalue)); //x.asp?Age=25&Name=Peter+Paul;
        		}
        		else //Passed Querystring already present, replace it no matter if it is ?Name= or &Name=


            		{
            			var replaceQSPrefix=(action.indexOf("?"+qsname+"=")==-1)?"&"+qsname+"=":"?"+qsname+"=";
            			var replaceQSSuffix=""; //This will be John in case of ?Name=John or &Name=John 
            			startpos=action.indexOf(replaceQSPrefix);
            			
            			for (a=(startpos+replaceQSPrefix.length);a<action.length;a++)


                			{
                				if ( action.charAt(a)=='&' ) //Next querystring beginning
                					break;
                				else
                					replaceQSSuffix += action.charAt(a);
                			}
                			newaction=action.replace(replaceQSPrefix+replaceQSSuffix,replaceQSPrefix+UrlEncode(qsvalue));
                			return newaction;
                		}	
                	}		
            }

            function UrlEncode(text) 


                {		
                	//text="A.asp?name=Amit Chauhan&Age=25"; //Example
                	
                	/*
                	text=text.replace("/\//g","%2F");
                	text=text.replace("/?/g","%3F");
                	text=text.replace("/=/g","%3D");
                	text=text.replace("/&/g","%26");			
                	*/	
                	
                	//text=ReplaceAll(text, "/\", "%2F"); 
                	text=ReplaceAll(text, "?", "%3F");
                	text=ReplaceAll(text, "=", "%3D");
                	text=ReplaceAll(text, "&", "%26");
                	text=ReplaceAll(text, " ", "+");
                	text=ReplaceAll(text, ",", "%2c");	
                	
                	return text;
            }

            //Replace all given string from a string
            //     
            function ReplaceAll(varb, replaceThis, replaceBy)


                {	
                	newvarbarray=varb.toString().split(replaceThis);
                	newvarb=newvarbarray.join(replaceBy);	
                	return newvarb;
            }

            function process()


                {
                objfrm =document.frm
                objfrm.result.value = ChangeQueryStringValue(objfrm.url.value,objfrm.qs.value,objfrm.qsvalue.value);
            }


function AvaliaQueryString(ji) {
	hu = window.location.search.substring(1);
	gy = hu.split("&");
	for (i=0;i<gy.length;i++) {
		ft = gy[i].split("=");
		if (ft[0] == ji) {
			return ft[1];
		}
	}
}