function validateGrade(){
	if ((document.register.std_grade.value=="Nursery") || (document.register.std_grade.value=="SELECT")){
		
		document.register.prev_sch1.disabled=true;
		document.register.prev_std1.disabled=true;
		document.register.prev_year1.disabled=true;
		
		document.register.prev_sch2.disabled=true;
		document.register.prev_std2.disabled=true;
		document.register.prev_year2.disabled=true;
		
		document.register.prev_sch3.disabled=true;
		document.register.prev_std3.disabled=true;
		document.register.prev_year3.disabled=true;
		
		document.register.prev_sch4.disabled=true;
		document.register.prev_std4.disabled=true;
		document.register.prev_year4.disabled=true;
		
		document.register.prev_reason.disabled=true;
		
	}else if (document.register.std_grade.value=="LKG"){
		document.register.prev_sch1.disabled=false;
		document.register.prev_std1.disabled=false;
		document.register.prev_year1.disabled=false;
		
		document.register.prev_sch2.disabled=true;
		document.register.prev_std2.disabled=true;
		document.register.prev_year2.disabled=true;
		
		document.register.prev_sch3.disabled=true;
		document.register.prev_std3.disabled=true;
		document.register.prev_year3.disabled=true;
		
		document.register.prev_sch4.disabled=true;
		document.register.prev_std4.disabled=true;
		document.register.prev_year4.disabled=true;
		
		document.register.prev_reason.disabled=false;
	
	}else{
		document.register.prev_sch1.disabled=false;
		document.register.prev_std1.disabled=false;
		document.register.prev_year1.disabled=false;
		
		document.register.prev_sch2.disabled=false;
		document.register.prev_std2.disabled=false;
		document.register.prev_year2.disabled=false;
		
		document.register.prev_sch3.disabled=false;
		document.register.prev_std3.disabled=false;
		document.register.prev_year3.disabled=false;
		
		document.register.prev_sch4.disabled=false;
		document.register.prev_std4.disabled=false;
		document.register.prev_year4.disabled=false;
		
		document.register.prev_reason.disabled=false;
	}
}


function updateParent(){
	if (document.register.relationship.value=="Father"){
		fath_name.innerHTML="Father's Name";
	}else if(document.register.relationship.value=="Mother"){
		fath_name.innerHTML="Mother's Name";
	}else if(document.register.relationship.value=="Guardian"){
		fath_name.innerHTML="Guardian's Name";
	}
}