function showpic(id,imgno){
	for(i=1;i<=imgno;i++){
		if(i!=id){
    		document.getElementById(i+'pic').style.display='none'; 
		} else {
			document.getElementById(i+'pic').style.display='block';
		}
	}
}function checkproductopts(){
	var x;
	var d;
	var isthereoptyorn=document.getElementById('isthereopt').value;
	var checkoptss=document.getElementById('checkopts').value;
	var selectsarr=checkoptss.split(',');
	if (isthereoptyorn=='1') {
		var d=0;
		for (x=0;x<selectsarr.length;x++){
			var selectboxid=selectsarr[x];
			 d=document.getElementById(selectboxid).selectedIndex;
			if (!d) {
				alert('Please select the options');
				return false;
			}
		}
	}	
}
function validatereview(){
	err='';
	var valide= /^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
	var email=trimAll(document.getElementById('rEmail').value);
	var name=trimAll(document.getElementById('rName').value);
	var review=trimAll(document.getElementById('rReview').value);
	if(!email.match(valide)){
		err+='1';
	}
	if(name==''||review==''){
		err+='1';
	}
	if(err!=''){
		document.getElementById('errReview').innerHTML='Please fill the required fields correctly';
		return false;
	}
}